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 is available in a length of 2 inches. The end mill has 2 flutes and can machine a variety of materials including steel, stainless steel, cast iron, aluminum, copper, brass, bronze, plastic, and graphite. It is designed for high performance milling with its variable helix flutes to reduce chatter and vibration. The end mill provides accurate corner radii and can be run at high speeds and feeds. It is made in the USA by Micro 100 Tool Corp.