This M2 pipe tap is made of high speed steel and has a 0.312 inch diameter, 1 7/16 inch long shank. It is designed for use with all materials, and meets ANSI standards. This H311-62055 series pipe tap has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through, has right hand direction with a 2⅛ inch length. Plus it has four flutes and a straight shank.