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, 1/2" cutting diameter, and 2 flute count. The end mill is made of solid carbide for wear resistance and has a TiAIN coating to reduce friction and heat. It can machine steels, cast iron, aluminum, copper, brass, bronze, plastics, and other non-ferrous materials. This is a high quality carbide end mill for moderate to heavy-duty milling applications.