The Micro 100 Corner Radius End Mill from Grainger is a bright finish, carbide end mill with a corner radius of 0.031 inches. It has a 1/4 inch shank diameter and a 1/2 inch overall length. The end mill has 2 flutes and can be run at speeds up to 25,000 RPM with feed rates up to 80 IPM. It is made in the USA and well-suited for machining aluminum, brass, bronze, copper, plastics, and other non-ferrous materials. This versatile end mill can be used for slotting, side milling, and contouring operations.