High Quality Material: The combination of high-speed steel black and gold oxide finish increases drill bit's corrosion resistance and wear resistance.
135°Split Point: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, fully ground drill bit with sharp and durable cutting edge. Twist design for bring metal shavings up and out of the hole drill.
Features: round straight shank, self-centering design prevents walking, fully ground twist design ensures a drilling performance by decreasing friction, easily for drilling materials includs stainless steel, cast iron, alloy, wood and hard plastics.
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, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 and 1/2 inch bits;Storage in a metal indexed case.