21-Pc. Black Oxide Drill Bit Set

Master Mechanic 21 Piece, Black Oxide Drill Bit Set, For fast drilling in wood, plastic and soft metal. Black oxide finish runs cooler and lasts longer. 135 split point for accurate starts. Split point black oxide drill bits are made of premium-quality, high-speed steel and designed for fast, heavy-duty drilling. The 135 split point eliminates walking and provides fast penetration. Black oxide tempering treatment reduces frictional resistance and improves chip flow. Straight shank, jobbers length. Set includes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64" & 3/8".