The Grainger Approved Square End Mill Single End Carbide is a milling cutter with a square end for machining flat surfaces, slots, and shoulders. It has a 1/2" shank diameter, 1-1/2" overall length, and 1/2" cutting diameter. The end mill is made of solid carbide for wear resistance and has 2 flutes for efficient chip removal. It has a TiAIN coating to reduce friction and heat. The end mill can machine steels, cast iron, aluminum, copper, brass, bronze, plastics, and other non-ferrous materials. It is designed for high speed machining with speeds up to 21,000 RPM and feed rates up to 80 IPM. The end mill is manufactured in the USA by Grainger Industrial Supply to tight tolerances.