The Grainger Approved Square End Mill Single End is a high-speed steel end mill with a square end for milling slots, keyways, and pockets. It has a 1/2" shank diameter, a 1/2" cutting diameter, a 2" overall length, and a 1-1/2" depth of cut. The end mill has four flutes and a right-hand spiral. It is designed for use on steel, cast iron, aluminum, and other non-ferrous metals at speeds up to 2000 SFM. Made in the USA, this end mill provides accurate cutting and long tool life.