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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Super Primalloy® Cobalt
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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", 5/8", 3/4" & 1" Plastic Case M42 Cobalt Ferro Gold 4 1 Log in to view price
9/16" - 1” Plastic Case M42 Cobalt Ferro Gold 8 1 Log in to view price
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.
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#1 - #60 60 Pc Metal Index M42 Cobalt Gold 60 1 Log in to view price
1/16" - 1/2" 3 Drawer Cabinet M Series Alloy Black Oxide, Ferro Gold 56 1 Log in to view price
1/16" - 1/2" 29 Pc HD Index M42 Cobalt Gold 29 1 Log in to view price
1/16" - 1/2" 29 Pc Hand Held M42 Cobalt Gold 29 1 Log in to view price
1/16" - 1/2" 29 Pc Ultra Index M42 Cobalt Gold 29 1 Log in to view price
1/16" - 1/2" Refill M Series Alloy Black Oxide, Ferro Gold 56 1 Log in to view price
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.
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1/16" - 3/8" 29 Pc Metal Index M42 Cobalt Gold 21 1 Log in to view price
1/16" - 1/2" 29 Pc Metal Index M42 Cobalt Gold 29 1 Log in to view price
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 Log in to view price
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 Log in to view price

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112 of 12 Results
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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