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 5/8 inch diameter shank. This square end mill is designed for use with aluminum, brass, bronze, cast iron, copper, 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 four inch length.