17 Piece, Black Oxide Drill Bit Set, 135 Degree Split Point Drills On Contact & Prevents Walking, Patented Core Diameter Reduces Breakage, Black Oxide For Greater Wear Resistance Sizes 2 Each 1/16", 1 Each Of The Following: 5/64" , 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 3/64", 7/32", 15/64", 1/4", 5/16", 3/8" & 1/2", Tough Case Container.