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 3/4 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 non-centre cutting. It also has right hand cutting direction, along with six flutes and a 4¼ inch length.