Drill Bit Sets

Whether you need high-performance drill bits for hard materials or a versatile step drill bit set for various hole sizes, we have what you need.

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149 results
Super Primalloy® Cryo-Gen N™ Drill Bit Sets
Super Primalloy® Cryo-Gen N™ Drill Bit Sets
Treated cryogenically and nitrided for extended service life, these bits have a 135° split point and are 15% shorter than jobber. A dark‑gold finish improves lubricity, while flatted shanks (≥ 3/16") prevent chuck spin. Perfect for MRO tasks needing robust bits in tough metals. Proudly made in the USA.
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
Nitride
56
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
Refill
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
Refill
M Series Alloy
Nitride
56
1
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Super Primalloy® Cryo-Gen N™ Maintenance Length Left Hand Drill Bit Sets
Super Primalloy® Cryo-Gen N™ Maintenance Length Left Hand Drill Bit Sets
These left‑hand bits feature cryogenic and nitride‑hardened steel for durability. Shorter “maintenance length” adds rigidity, and a 135° split point starts quickly in hard metals. Left‑hand rotation often backs out broken fasteners without an extractor. Flatted shanks (≥ 3/16") reduce slip. Made in the USA for demanding MRO tasks.
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
Nitride
15
1
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1/8" - 1/2"
7 Pc Metal Index
M Series Alloy
Nitride
7
1
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Super Primalloy® 1/2" Shank Cryo-Gen "N"™ Drill Bit Sets
Super Primalloy® 1/2" Shank Cryo-Gen "N"™ Drill Bit Sets
Merging cryogenic and nitride treatments on M‑series alloy, these 6" S&D bits excel in high‑tensile materials. A 135° split point eliminates center punching, and flatted shanks (1/2") prevent slip. Cryo enhances toughness, while ferro-gold/black oxide reduces friction. Perfect for deeper industrial holemaking. Made in the USA.
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9/16" - 1"
4 Pc Plastic Case
M Series Alloy
Nitride
4
1
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9/16" - 1"
8 Pc Plastic Case
M Series Alloy
Nitride
8
1
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9/16" - 1"
33 Pc Bench Top
M Series Alloy
Nitride
8
1
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115 Piece Super Primalloy® Cryo-Gen "N" Drill Bit Set
115 Piece Super Primalloy® Cryo-Gen "N" Drill Bit Set
These cryogenically treated, nitride-hardened bits are 15% shorter than jobber length for extra rigidity. With a 135° split point and “M” series alloy, they resist walk and breakage in tough metals. Flatted shanks (≥ 3/16") prevent slippage, and wire/letter sizes come in industrial length. An all‑in‑one set made in the USA.
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1/16" - 1/2", #1 - #60, A - Z
115 Pc Ultimate Index
M Series Alloy
Nitride
115
1
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Cryo-Gen "N" Industrial Length Drill Bit Sets
Cryo-Gen "N" Industrial Length Drill Bit Sets
For deep hole drilling in high-tensile materials, these bits combine Super Primalloy®, cryogenic, and nitride treatments. The 135° split point eliminates center punching, while jobber length (15% longer than maintenance) offers more reach. A dark-gold surface enhances lubricity, and flatted shanks (≥ 3/16") prevent slippage. Ideal for tough metals in MRO tasks. USA-made for lasting performance.
Drill Size Index Material Finish Number of Pieces Package Qty Item #
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
Nitride
56
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
Nitride
29
1
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1/16" - 1/2"
Refill
M Series Alloy
Nitride
56
1
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157 Piece Super Primalloy® Cryo-Gen "N" Master Drill Bit Set
157 Piece Super Primalloy® Cryo-Gen "N" Master Drill Bit Set
A comprehensive set featuring cryogenic and nitride treatments. A 135° split point quickly penetrates tough alloys, while the dark‑gold surface adds lubricity. Flatted shanks (≥ 3/16") prevent spin. The M‑series alloy stands up to high heat and stress. Ideal for shops that need a wide range of sizes. Made in the USA.
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1/16" - 1/2", #1 - #60, A - Z
4 Drawer Cabinet
M Series Alloy
Nitride
157
1
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Super Primalloy® Cryo-Gen N™ Letter Drill Bit Set
Super Primalloy® Cryo-Gen N™ Letter Drill Bit Set
These letter‑size bits feature Cryo‑Gen “N” treatment with a 135° split point, ensuring easy starts in tough alloys. The dark‑gold surface lowers friction, while the M‑series steel plus nitride boost edge retention. Flatted shanks prevent spin in the chuck. Perfect for letter‑specific machining tasks. Made in the USA for reliability.
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A - Z
26 Pc Metal Index
M Series Alloy
Nitride
26
1
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Super Primalloy® Cryo-Gen N™ Wire Drill Set
Super Primalloy® Cryo-Gen N™ Wire Drill Set
Wire‑gauge sized bits with cryogenic and nitride treatments. A 135° split point ensures smooth starts, while the short length adds rigidity. The M‑series alloy plus dark‑gold surface runs cooler. Flatted shanks (≥ 3/16") stop slipping. Perfect for precise, small‑diameter holes in tough metals. Made in the USA.
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No. 1 - 60
60 Pc Metal Index
M Series Alloy
Nitride
60
1
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Super Primalloy® Maintenance Length Ultra Step Drill Bits & Maintenance Length Reamer Set
Super Primalloy® Maintenance Length Ultra Step Drill Bits & Maintenance Length Reamer Set
Shorter reamers and step bits for greater rigidity in tight areas. The 30° helix reamer quickly enlarges or deburrs holes in truck frames or tough alloys, while the left‑hand helix design increases safety. Ferro‑gold finish reduces friction. Included pilot bits streamline hole creation. Made in the USA for fast, precise drilling/reaming.
Diameter Index Number of Pieces Material Finish Package Qty Item #
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3/16" - 3/4"
Ultra Index
8
High Speed Steel
Ferro-Gold, Black Oxide
1
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Super Primalloy® 1/2" Reduced Shank Cobalt Drill Bit Sets
Super Primalloy® 1/2" Reduced Shank Cobalt Drill Bit Sets
With 1/2" shanks in bigger diameters, these M-42 cobalt bits handle tough alloys or stainless. A 135° split point avoids center punching, and the 6" overall length offers deeper reach. The gold finish reduces friction and corrosion. Perfect for structural steel or high-tensile drilling in an industrial setting. Made in the USA for consistent performance.
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9/16" - 1”
4 Pc Plastic Case
M42 Cobalt
Gold
4
1
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9/16" - 1”
8 Pc Plastic Case
M42 Cobalt
Gold
8
1
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Super Primalloy® Cobalt Drill Bit Sets
Super Primalloy® Cobalt Drill Bit Sets
Featuring M‑42 cobalt for superior heat resistance, these bits excel in stainless and hard alloys. A 135° split point eases starts, while a gold finish adds lubricity and rust prevention. Built on proven Super Primalloy® construction, they’re ideal for tough drilling tasks. Made in the USA for durability and efficiency.
Drill Size Index Material Finish Number of Pieces Package Qty Item #
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1/16" - 1/2"
3 Drawer Cabinet
M42 Cobalt
Gold
56
1
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1/16" - 1/2"
29 Pc HD Index
M42 Cobalt
Gold
29
1
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1/16" - 1/2"
29 Pc Metal Index
M42 Cobalt
Gold
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M42 Cobalt
Gold
29
1
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1/16" - 1/2"
Refill
M42 Cobalt
Gold
56
1
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No. 1 - 60
60 Pc Metal Index
M42 Cobalt
Gold
60
1
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Super Primalloy® Cobalt Stubby Drill Bit Sets
Super Primalloy® Cobalt Stubby Drill Bit Sets
Built from M‑42 cobalt (8% content) for heat resistance, these stubby bits excel in stainless or tough alloys. A 135° split point reduces slip, and the gold finish aids lubricity. The shorter length adds rigidity where tight spaces or precision matter. Great for shops needing improved wear life and quick starts in hard metals. Made in the USA.
Drill Size Index Material Finish Number of Pieces Package Qty Item #
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1/16" - 3/8"
29 Pc Metal Index
M42 Cobalt
Gold
21
1
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1/16" - 1/2"
29 Pc Metal Index
M42 Cobalt
Gold
29
1
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115 Piece Super Primalloy® Cobalt Ultimate Index Drill Bit Set
115 Piece Super Primalloy® Cobalt Ultimate Index Drill Bit Set
This comprehensive set uses M‑42 cobalt (8% content) for enhanced heat resistance in alloys or stainless. A 135° split point eliminates center punching, while the gold surface reduces friction. Perfect for advanced drilling of tough metals, it includes fractional, letter, and wire sizes in one kit. Made in the USA for consistent, high-strength performance.
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1/16" - 1/2", #1 - #60, A - Z
115 Pc Ultimate Index
M42 Cobalt
Gold
115
1
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Super Primalloy® Cobalt Letter Drill Set
Super Primalloy® Cobalt Letter Drill Set
M‑42 cobalt construction provides heat resistance for letter‑size holes in stainless or tough alloys. The 135° split point boosts accuracy, while gold finish lowers friction. Built on proven Super Primalloy® durability, this set is perfect for consistent letter drilling. Proudly made in the USA for long‑lasting performance.
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A - Z
26 Pc Metal Index
M42 Cobalt
Gold
26
1
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Super Primalloy® Industrial Length (Jobber) Drill Bit Sets
Super Primalloy® Industrial Length (Jobber) Drill Bit Sets
For deeper holemaking, these jobber‑length M‑series bits have a 135° split point and nitrocarburized edges for extended wear. Their ferro‑gold/black oxide finish lowers friction, and the expanded web design reduces breakage. Perfect for routine and demanding drilling tasks, made in the USA for reliability.
Drill Size Index Material Finish Number of Pieces Package Qty Item #
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
Black Oxide, Ferro Gold
56
1
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
15
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
Black Oxide, Ferro Gold
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
Black Oxide, Ferro Gold
15
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
Black Oxide, Ferro Gold
29
1
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1/16" - 1/2"
Refill
M Series Alloy
Black Oxide, Ferro Gold
56
1
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Super Primalloy® 3/8" Shank Maintenance Length Drill Bit Sets
Super Primalloy® 3/8" Shank Maintenance Length Drill Bit Sets
These 3/8" reduced shank bits fit standard 3/8" chucks. At 5" long, they’re more rigid than jobber bits, with a 135° split point for easy starts. Ferro‑gold & black oxide finishes minimize friction, while 3 flats stop slipping. Perfect for heavier‑duty drilling in smaller chucks. Made in the USA.
Drill Size Index Material Finish Number of Pieces Package Qty Item #
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
15
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
15
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
21
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
29
1
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Super Primalloy® Maintenance Length Left Hand Drill Bit Sets
Super Primalloy® Maintenance Length Left Hand Drill Bit Sets
Shorter “maintenance length” for tight spaces, these left‑hand bits can remove stuck fasteners. A 135° split point reduces center punching, and the M‑series alloy plus ferro‑gold finish extends tool life. Flatted shanks (≥ 3/16") prevent slip. Ideal for maintenance repairs. Made in the USA.
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
15
1
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1/8" - 1/2"
7 Pc Metal Index
M Series Alloy
Black Oxide, Ferro Gold
7
1
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M42 Cobalt Threaded Shank Short Drill Bit Set
M42 Cobalt Threaded Shank Short Drill Bit Set
Designed for aircraft drills in tight spaces, these stubby M42 cobalt bits have 1/4"-28 threaded shanks for quick mounting. A 135° split point prevents wandering on rivets and tough alloys. The cobalt construction resists heat, ensuring long life. Perfect for aerospace, automotive, or MRO tasks. Made in the USA.
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No. 10 - 40
6 Compartment Box
M42 Cobalt
6
1
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Super Primalloy® Edge Drill Bit Sets
Super Primalloy® Edge Drill Bit Sets
Coated with nACo nanocomposite for extreme heat and friction resistance, these bits last up to 40% longer. Maintenance length (15% shorter than jobber) adds rigidity, while a 135° split point minimizes wandering. Three flatted shanks (≥ 3/16") prevent slip. Ideal for metals requiring high speeds and feeds. Proudly made in the USA for faster drilling and reduced downtime.
Drill Length: Maintenance Length

Drill Size Index Material Number of Pieces Package Qty Item #
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
56
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
29
1
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1/16" - 1/2"
Refill
M Series Alloy
29
1
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1/16" - 1/2"
Refill
M Series Alloy
56
1
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1/8" - 1/2"
7 Pc Metal Index
M Series Alloy
7
1
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Super Primalloy® Drill Bit Sets
Super Primalloy® Drill Bit Sets
Shorter than jobber, these 135° split point M‑series bits boost rigidity and reduce wandering. Three flats on shanks stop slippage. Ferro‑gold & black oxide extends tool life, making them ideal for everyday shop drilling. Perfect for tight spaces where you need better control. Made in the USA.
Drill Length: Maintenance Length

Drill Size Index Material Number of Pieces Package Qty Item #
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1/16" - 1/4"
13 Pc Metal Index
M Series Alloy
13
1
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1/16" - 3/8"
29 Pc Metal Index
M Series Alloy
21
1
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
56
1
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
15
1
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1/16" - 1/2"
21 Pc Metal Index
M Series Alloy
21
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
15
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
29
1
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Drill Length: Stubby Length

Drill Size Index Material Number of Pieces Package Qty Item #
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1/16" - 3/8"
29 Pc Metal Index
M Series Alloy
21
1
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
56
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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Super Primalloy® Ultra Step Drill Bit Sets
Super Primalloy® Ultra Step Drill Bit Sets
Featuring a micro-center stepped point, these bits cut holes without pilot drilling. They reduce heat buildup, maintaining edge sharpness. The shorter, maintenance length design boosts rigidity, while a three-flatted shank stops slippage. A ferro-gold/black oxide finish lowers friction. Ideal for burr-free holes in metal or sheet metal. Made in the USA for cleaner, more efficient drilling.
Drill Length: Maintenance Length

Drill Size Index Material Number of Pieces Package Qty Item #
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1/16" - 1/2"
3 Drawer Cabinet
M Series Alloy
56
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
29
1
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1/16" - 1/2"
Refill
M Series Alloy
29
1
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1/16" - 1/2"
Refill
M Series Alloy
56
1
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Drill Length: Industrial Length

Drill Size Index Material Number of Pieces Package Qty Item #
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9/16" - 1"
4 Pc Plastic Case
M Series Alloy
4
1
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9/16" - 1"
8 Pc Plastic Case
M Series Alloy
8
1
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Super Primalloy® 1/2" Shank S&D Drill Bit Sets
Super Primalloy® 1/2" Shank S&D Drill Bit Sets
These 6"-long S&D drill bits feature a 118° bite point for speedy starts. Their split point lowers wandering, while an M‑series alloy plus gold/black oxide finish resists wear. Three flats (on diameters up to 1") prevent chuck slip. Ideal for deeper holes in mild steel or alloys, they increase accuracy and reduce friction. Proudly made in the USA for reliable performance in MRO tasks.
Drill Length: Industrial Length

Drill Size Index Material Number of Pieces Package Qty Item #
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33/64" - 63/64"
5 Drawer Cabinet
M Series Alloy
31
1
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33/64" - 63/64"
Refill
M Series Alloy
31
1
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9/16" - 15/16"
5 Drawer Cabinet
M Series Alloy
7
1
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9/16" - 15/16"
Refill
M Series Alloy
7
1
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9/16" - 31/32"
5 Drawer Cabinet
M Series Alloy
15
1
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9/16" - 31/32"
Refill
M Series Alloy
15
1
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9/16" - 1"
4 Pc Plastic Case
M Series Alloy
4
1
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9/16" - 1"
8 Pc Plastic Case
M Series Alloy
8
1
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9/16" - 1"
33 Pc Bench Top
M Series Alloy
8
1
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Drill Length: Maintenance Length

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9/16" - 1"
4 Pc Plastic Case
M Series Alloy
4
1
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9/16" - 1"
8 Pc Plastic Case
M Series Alloy
8
1
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9/16" - 1"
33 Pc Bench Top
M Series Alloy
8
1
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Super Primalloy® Left Hand Drill Bit Sets
Super Primalloy® Left Hand Drill Bit Sets
These short, left‑hand bits often remove broken fasteners by backing them out while drilling. The 135° split point stops walking, and the M‑series alloy plus ferro‑gold finish resists wear. Flatted shanks (≥ 3/16") reduce slippage, giving better control. Perfect for tight spaces in maintenance or engine repair. Proudly made in the USA.
Drill Length: Industrial Length

Drill Size Index Material Number of Pieces Package Qty Item #
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
15
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/8" - 1/2"
7 Pc Metal Index
M Series Alloy
7
1
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Drill Length: Stubby Length

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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
15
1
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3/16" - 1/2"
7 Pc Nylon Pouch
M Series Alloy
6
1
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SST Super Primalloy® Drill Bit Sets
SST Super Primalloy® Drill Bit Sets
Engineered for non‑ferrous metals like stainless or aluminum, these high‑helix bits drill up to twice as fast as standard bits. A 135° split point stops wandering, and the 15% longer design (vs. maintenance length) offers better reach. Not for high‑tensile steels. Made in the USA for quick, efficient drilling in softer metals.
Drill Length: Industrial Length

Drill Size Index Material Number of Pieces Package Qty Item #
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1/16" - 1/2"
15 Pc Metal Index
M Series Alloy
15
1
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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
29
1
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Super Primalloy® Metric Drill Bit Sets
Super Primalloy® Metric Drill Bit Sets
Get metric sizes in a 135° split‑point M‑series alloy design. Expanded webs add strength, while ferro‑gold and black oxide finishes reduce friction. Excellent for metals requiring deeper holes. This all‑metric set is made in the USA, providing durability and consistent holemaking performance.
Drill Length: Industrial Length

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M1 - M13
3 Drawer Cabinet
M Series Alloy
45
1
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M1 - M13
25 Pc Metal Index
M Series Alloy
13
1
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M1 - M13
25 Pc Metal Index
M Series Alloy
25
1
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M1 - M13
Refill
M Series Alloy
45
1
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Super Primalloy® Quick Change Hex Shank Drill Bit Sets
Super Primalloy® Quick Change Hex Shank Drill Bit Sets
A faster way to swap bits: these M‑series alloy drills have a 135° split point for easy starts. A hex shank speeds changes and prevents slipping in chucks. Perfect for cordless tools needing quick bit changes. The gold surface improves lubricity and wear life. Ideal for general MRO or workshop drilling. Made in the USA for dependable, heavy‑duty performance.
Drill Length: Industrial Length

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1/16" - 1/4"
7 Pc Nylon Pouch
M Series Alloy
7
1
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1/16" - 1/2"
15 Pc Nylon Pouch
M Series Alloy
15
1
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Black Oxide Drill Bit Sets
Black Oxide Drill Bit Sets
Maintenance‑grade M‑2 bits with a 135° split point for quick starts. A black oxide finish extends wear life, while heavy‑duty construction suits many applications. Ideal for general workshops needing consistent performance. Proudly made in the USA for broad reliability.
Drill Length: Industrial Length

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1/16" - 1/4"
29 Pc Ultra Index
M2 Alloy Steel
13
1
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1/16" - 1/2"
3 Drawer Cabinet
M2 Alloy Steel
56
1
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1/16" - 1/2"
29 Pc Metal Index
M2 Alloy Steel
15
1
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1/16" - 1/2"
29 Pc Metal Index
M2 Alloy Steel
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M2 Alloy Steel
29
1
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3 Piece Ultra-Bit™ Step Drill Sets
3 Piece Ultra-Bit™ Step Drill Sets
Each step drill cuts multiple hole sizes in thin metals or plastics. Double flutes deliver smooth, burr-free results, and the ferro-gold surface lowers friction. Three flatted shanks prevent slip, while high-moly alloy steel extends tool life. Great for quick hole changes without switching bits. Perfect for MRO shops or electricians. Made in the USA.
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1/8" - 3/4"
3 Pc Metal Index
High Moly Alloy Steel
3
1
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1/8" - 1"
3 Pc Metal Index
High Moly Alloy Steel
3
1
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3 Piece Ultra-Bit™ TiN-Coated Step Drill Sets
3 Piece Ultra-Bit™ TiN-Coated Step Drill Sets
Each step bit can drill multiple diameters in thin materials. TiN coating extends life up to 10×, while double flutes ensure burr-free holes. High-moly steel and 3 flatted shanks reduce slip, and fractional laser markings guide drilling sizes. Perfect for metal, plastic, or laminates. Made in the USA for smooth, fast cutting.
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1/8" - 3/4"
3 Pc Metal Index
High Moly Alloy Steel
3
1
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1/8" - 1"
3 Pc Metal Index
High Moly Alloy Steel
3
1
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Taper-Kut Stepless Drill Sets
Taper-Kut Stepless Drill Sets
Non‑stepped Taper‑Kut bits let you drill any hole diameter within each bit’s range. Titanium Nitride reduces friction, enabling faster speeds. The dual‑flute design clears chips smoothly, forming burr‑free holes up to 2 mm thick. Ideal for sheet metal, plastics, or formica, with a lobular shank that prevents slippage. USA‑made for precision.
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1/8" - 1-3/16"
3 Pc Metal Index
High Speed Steel
3
1
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Ultra Vari-Bit Sets
Ultra Vari-Bit Sets
These HSS step bits drill thin stainless, steel, aluminum, or plastic up to 1/8" thick. Double flutes remove material faster, while the three-sided shank prevents slip in chucks. Perfect for portable or press drilling where multiple sizes are needed without changing bits. High heat resistance ensures longer cutting life. Made in the USA for smooth, accurate holemaking.
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1/8" - 1"
4 Pc Plastic Case
High Speed Steel
3
1
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Super Primalloy® Ultra Step Left Hand Drill Bit & Extractor Sets
Super Primalloy® Ultra Step Left Hand Drill Bit & Extractor Sets
Ideal for removing broken fasteners without separate extractors, these left‑hand “Ultra Step” bits use a stepped drill point for fast starts. The short “maintenance length” increases rigidity, while M‑series alloy plus ferro-gold/black oxide finish resists wear. Perfect for quick repairs in MRO. Made in the USA.
Drill Length: Maintenance Length

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3/32" - 5/16", No. 1 - No. 5
10 Pc Metal Index
M Series Alloy
10
1
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Solid Carbide Drill Bit Sets
Solid Carbide Drill Bit Sets
Designed for tough alloys or high-Rc metals, these solid carbide bits maintain precise hole tolerances. Their 2-flute design adds rigidity, drilling up to 3× the diameter. Micro‑grain carbide resists wear in nickel, chrome, stainless, or titanium alloys. A 135° notched point helps reduce torque. Perfect for press or handheld drilling in high-tensile tasks. Made in the USA.
Drill Length: Stubby Length

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1/8" - 3/8"
5 Pc Wood Case
Carbide
5
1
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1/8" - 1/2"
7 Pc Wood Case
Carbide
7
1
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Masonry Drill Bit Sets
Masonry Drill Bit Sets
Perfect for holes in tile, brick, concrete, or cement. Tungsten carbide tips stay sharper for longer, while the wide spiral flute removes dust efficiently. Ideal for anchors, plumbing, or HVAC work, these bits can be used with hammer drills. Made in the USA for robust, reliable masonry drilling.
Drill Length: Aircraft Length

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1/8" - 1/2"
6 Pc Roll Pouch
High Speed Steel
6
1
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Invader Multi-Task Drill Bit Sets
Invader Multi-Task Drill Bit Sets
Drill Length: Custom Length

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1/8" - 1/2"
7 Pc Metal Index
M Series Alloy
7
1
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Super Primalloy® Drill Bit Sets For Taps
Super Primalloy® Drill Bit Sets For Taps
Avoid broken taps or weak threads: this set has exact drills for tap sizes 4-40 to 1/2". A chart in the index ensures you pick the correct hole size every time. No more undersized holes that snap taps or oversized holes with loose threads. A must-have for machinists or anyone tapping fasteners.
Drill Length: Industrial Length

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#43 - 29/64"
Tap & Drill Index
M Series Alloy
19
1
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Super Primalloy® TiN Coated Drill Bit Sets
Super Primalloy® TiN Coated Drill Bit Sets
Titanium Nitride coating plus M‑series alloy steel extends tool life by up to 5×. The 135° split point resists wandering in stainless or hard metals, and the heavy‑duty build suits high-wear applications. Great for shops wanting fewer bit changes and more consistent cutting. Gold TiN finish above the shank reduces friction and heat. Made in the USA for durable performance.
Drill Length: Industrial Length

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1/16" - 1/2"
29 Pc HD Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
29
1
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Spot Weld Drill Bit Sets
Spot Weld Drill Bit Sets
Designed for auto body work, these M‑42 cobalt bits remove spot welds quickly. They’re 30% faster thanks to 8% cobalt alloy, and the special spur point cuts one panel cleanly. Twin-end designs offer twice the service life. Ideal for standard or air drill motors, the gold finish reduces wear. This 4-piece kit covers 5/16" & 3/8" single/twin ends. Made in the USA for fast, effective panel separation.
Drill Length: Stubby Length

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5/16" - 3/8"
4 Pc Metal Index
M42 Cobalt
4
1
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Speedbor® 2000 Wood Boring Bit Sets
Speedbor® 2000 Wood Boring Bit Sets
These spade bits bore wood fast and cleanly. Speedbor® tips create precise holes with fewer splinters, while the hex shank prevents slippage in standard or cordless drills. The 6-piece set covers diameters from 3/8" to 1". Ideal for framing, carpentry, or general wood applications needing quick, smooth bores.
Drill Length: Custom Length

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3/8" - 1"
6 Pc Clam Shell
High Speed Steel
6
1
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Super Primalloy® Sheet Metal Drill Bit Sets
Super Primalloy® Sheet Metal Drill Bit Sets
These bits have a modified brad-point that delivers clean, burr-free holes in mild steel or aluminum up to 16 gauge. They’re also effective on wood, plastics, or composites. Dual outer cutters maintain accurate hole diameter with minimal burrs. Not recommended for thicker metals or stainless. Includes 1/8" to 3/8" sizes. Made in the USA for precise sheet-metal drilling.
Drill Length: Industrial Length

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1/8" - 3/8"
7 Pc Metal Index
High Speed Steel
5
1
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Super Primalloy® Parabolic Flute Drill Bit Sets
Super Primalloy® Parabolic Flute Drill Bit Sets
Parabolic flutes let you drill deeper holes in low- to medium-tensile materials without constant chip clearing. Their 135° split point speeds penetration, while the M‑series alloy ensures excellent wear resistance. Great for faster feed rates in thick or stacked metals. The black oxide treatment reduces friction and heat. Made in the USA for efficient, continuous holemaking.
Drill Length: Industrial Length

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1/16" - 1/2"
29 Pc Metal Index
M Series Alloy
29
1
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1/16" - 1/2"
29 Pc Ultra Index
M Series Alloy
29
1
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Hex Shank Drill Bit Sets
Hex Shank Drill Bit Sets
Designed for quick, stable drilling in wood, plastic, or metal. The 118° point fits a broad range of materials, while black oxide resists wear. Hex shanks prevent slipping in standard or cordless chucks. Includes 1/16"–1/4" bits in 1/32" increments. Made in the USA for precise holemaking.
Drill Length: Custom Length

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1/16" - 1/4"
7 Pc Clam Shell
High Speed Steel
7
1
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M42 Cobalt Threaded Shank Drill Bit Sets
M42 Cobalt Threaded Shank Drill Bit Sets
Engineered for tight spaces, these stubby M42 cobalt bits pair with aircraft‑style drills via 1/4"-28 threaded shanks. A 135° split point avoids wandering on tough alloys, while cobalt construction resists heat. Ideal for aerospace or automotive rivet removal. Made in the USA for robust performance.
Drill Length: Stubby Length

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No. 10 - 40
6 Compartment Box
M42 Cobalt
6
1
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Drill Length: Custom Long Length

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No. 10 - 40
6 Compartment Box
M42 Cobalt
6
1
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High Speed Steel Threaded Shank Drill Bit Sets
High Speed Steel Threaded Shank Drill Bit Sets
Perfect for aircraft‑style right‑angle drills, these HSS bits include 1/4"-28 threaded shanks plus a square nut for easy, secure mounting. A 135° split point reduces walking on rivets or screws, while the shortened body suits tight spots. Durable NAS‑standard steel ensures extended life in aerospace or MRO tasks. Made in the USA for reliable drilling in limited clearance.
Drill Length: Stubby Length

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No. 10 - 40
6 Compartment Box
High Speed Steel
6
1
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Drill Length: Custom Short Length

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No. 10 - 40
6 Compartment Box
High Speed Steel
6
1
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Drill Length: Custom Long Length

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No. 10 - 40
6 Compartment Box
High Speed Steel
6
1
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Featured Products:
  • Super Primalloy® 1/2" Reduced Shank Cobalt Drill Bit Set: Made with heavy-duty M42 cobalt alloy with 8% cobalt content for superior heat resistance and performance, especially for tough materials like stainless steel and titanium. 135° split point eliminates the need for center punching.
  • Cryo-Gen "N" Industrial Length Drill Bit Set: Multi-phase cryogenic treatment (-300°F) for improved molecular structure and durability; nitride-treated surfaces for edge retention and longer life. 135° split point for easy penetration, dark gold surface for increased lubricity and flatted shanks for better grip.
  • Ultra-Bit™ Step Drill Set: Multi-diameter drill capable of producing up to 13 hole sizes, with a double-fluted design for burr-free holes in thin materials. Made from high moly alloy steel, it can be used on various materials, including metal and plastics.

What is the best set of drill bits?
The best drill bit set depends on your specific needs. For versatility, a Cryo-Gen "N" is excellent for tough materials, while a step drill bit set is ideal for various hole sizes.

What is in a drill bit set?
A typical drill bit set includes various sizes of drill bits, providing complete coverage for the perfect-sized hole.

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