Black Oxide Drill Bit - 12 Pack 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... 3/16" Mill Diameter 0.1875" Diameter 2 5/16" Flute Length 3 1/2" Overall Length Black Oxide Coated 118° Point Angle 12 pcs per pack
