The Micro 100 1/8" Shank Threading Tool is a high speed steel threading tool with a 60 degree threading insert. It has a 1/8" shank diameter and can cut unified thread sizes from 4-56 to 1/4"-20. The overall length is 3-1/2" and it weighs 0.04 lbs. This single point threading tool allows quick insert changes and reduced tool pressure. It is designed for use on most materials including steel, stainless steel, cast iron, aluminum, brass, bronze, plastics and more. The replaceable threading insert provides accurate threads in a wide range of pitches.