The Micro 100 Micro Drill Bit is a high-speed steel drill bit with a 3/16 inch diameter. It has a straight shank and is designed for use in precision drilling applications in materials like steel, cast iron, aluminum, brass, bronze, and plastics. The bit features a 135 degree split point tip to reduce walking and wandering. It can drill holes up to 2 times the drill diameter in depth. The bit is made in the USA by Micro 100 and is sold individually.