The Micro 100 3/8" shank threading tool is a high speed steel insert style threading tool with a 3/8" shank diameter. It has a 60 degree threading insert that can cut unified, metric, acme, buttress, and worm threads. The insert is made of C2 grade carbide for wear resistance and toughness. This threading tool allows quick insert changes and reduced downtime. It is suitable for production threading applications in steels, cast iron, stainless steel, aluminum and other materials. The tool provides accurate threading starts and excellent surface finishes.