This square end mill is made out of high speed steel with a bright (uncoated) finish. It has a single end, with a Weldon flat one inch diameter shank. This square end mill is designed for use with aluminum, brass, bronze, cast iron, copper, hardened steel, nickel, stainless steel, steel, and titanium, and is for finishing and centre cutting. It also has right hand cutting direction, along with four flutes and 4½ inch length.