Black Oxide Drill Bit - 6 pcs The HSS Tool Material provides good wear resistance in mild steels, soft metals (aluminum, copper,brass, bronze) and non-ferrous materials. The Black Oxide Coating helps retain lubricants to aid in wear resistance and chip flow. Features include... 3/8" Mill Diameter 0.3750" Diameter 3 5/8" Flute Length 5" Overall Length Black Oxide Coated 118° Point Angle 6 pcs
