The Grainger Approved Square End Mill Single End Carbide is a milling cutter with a square end for machining slots, shoulders, and angles. It has a 1/2" shank diameter, 1-1/2" overall length, and 1/2" cutting diameter. The end mill features 4 flutes and is made of solid carbide for wear resistance and durability. 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 in both clockwise and counterclockwise directions.