The Micro 100 1/8" Carbide Threading Tool is a high-performance threading tool designed for cutting a variety of materials including steel, stainless steel, cast iron, aluminum, plastic, and more. It features a carbide insert with a ground thread profile that allows for precision threading. The tool has a shank diameter of 1/8", an overall length of 3-1/2", and a reach of 1-1/2". It can cut unified threads from 4-56 to 1/4-20, metric threads from M1.6 to M6, and pipe threads. The Micro 100 threading tool offers accurate threading starts, smooth thread finishes, and long tool life. It's made in the USA and well-suited for production threading applications.