The Micro 100 Corner Radius End Mill is a carbide end mill with a corner radius of 0.031 inches. It has a diameter of 0.25 inches and an overall length of 2.5 inches. The end mill has a TiAlN coating and 4 flutes. It is designed for high speed machining in aluminum, brass, copper, and other non-ferrous materials. The end mill provides a strong, sharp cutting edge and smooth corner finish. With its small size, it is well-suited for machining in tight areas and small parts. The end mill is made in the USA by Micro 100, a manufacturer of high performance cutting tools.