Norseman 3/16-1/2 Hex Shank Step Drill Titanium Nitride Coated #68501 "Made in the USA"

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Special Axial and Radial flute design increases work piece penetration. Dual flute construction drills clean accurate holes in thin materials, quickly and easily. Titanium Nitride coated with 3-flats on shank. Titanium nitride coated tools last six times longer than uncoated tools. Cutting edge stays sharper longer. Titanium nitride coating reduces friction.