21/64" Super Primalloy® Cryo-Gen N™ Maintenance Length Drill Bit - 3 Pack

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21/64" Super Primalloy® Cryo-Gen N™ Maintenance Length Drill Bit - 3 Pack

Price

Item Number: 8275211

Package Weight: 0.2 lbs

Diameter

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Product Details

Super Primalloy® CONSTRUCTION - The proven, heavy duty construction of our Super Primalloy® Drills.
MULTI-PHASE CRYOGENIC TREATMENT - Patented deep thermal cycle brings drills down to -300°F to alter and refine the molecular grain structure, relieve stress fracturing and increase durability & life.
"N" SERIES NITRIDE TREATMENT - Nitride treatment case hardens the cutting surfaces for superior edge retention, faster long-term hole creation and longer service life.
SUPER HEAVY DUTY 135° SPLIT POINT - 135° split point geometry eliminates the need for center punching. Allows for easier penetration and increased life in high tensile materials.
MAINTENANCE LENGTH - Overall length reduced by an average of 15% to provide increased rigidity and breakage resistance.
STABILIZED MOLECULAR STRUCTURE - Cryogenic treatment reduces brittleness and provides extended tool life.
HIGH LUBRICITY SURFACE TREATMENT - Dark gold surface treated body provides excellent lubricity for increased drill life.
MODIFIED FLUTE & WEB - Provides increased strength and durability.
SUPER-TOUGH "M" SERIES ALLOY STEEL CONSTRUCTION - Superior tool steel provides exceptional wear resistance and longer life.
MADE IN THE U.S.A.