Master Mechanic, 21 Piece, Black Oxide Drill Bit Set, Includes .0625 inch To .375 inch , For Fast Drilling In Wood, Plastic and Soft Metal, Black Oxide Finish Runs Cooler, 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, Includes: .0625 inch , 5-64 inch , .0938 inch , 7-64 inch , .125 inch , 9-64 inch , .1563 inch , 11-64 inch , .1875 inch , 13-64 inch , .2188 inch , 15-64 inch , .25 inch , 17-64 inch , .28 inch , 19-64 inch , .3125 inch , 21-64 inch , 1.03 inch , 23-64 inch and .375 inch , Organized In A Durable Case, Clamshell.