This hand tap is made of carbon steel and has a 0.8 inch diameter shank. It is designed for use with all materials, and meets the standards for ANSI. This 312-2302 series hand tap has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through, has right hand direction with a 5⅛ inch length. Plus it has four flutes and a straight shank.