The Micro 100 Corner Radius End Mill is a carbide end mill with a corner radius of 0.031 inches. It has a 1/4 inch shank diameter and is available in lengths from 1 inch to 3 inches. The end mill has 4 flutes and can be run at speeds up to 12,000 RPM. It is designed for slotting, side milling and contouring in steels, stainless steels, cast iron, aluminum and other non-ferrous materials. The end mill features Micro 100's TuffCut XR coating for increased tool life and performance.