The Micro 100 Spotting Drill Bit E-Drill is a high-speed steel spotting drill bit with a 1/8" shank diameter and a 60 degree included angle point. It has an overall length of 1-1/2" and is designed for center drilling and spotting operations in steel, cast iron, aluminum, brass, bronze and plastic. The E-Drill geometry allows for faster feed rates and has a 135 degree split point for easy centering and reduced thrust. This USA-made spotting drill bit can be run at speeds up to 39,000 RPM and is ideal for use on CNC machines, automatic screw machines, and manual machine tools.