This general purpose grade HG-2 series 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 cast iron and steel, and is for finishing and centre cutting. Plus, it is non-coolant through and has right hand cutting direction, along with two flutes and 3⅞ inch length.