This M2 spiral point tap is made of high speed steel and has a 0.381 inch diameter shank. It is designed for use with all materials, and meets the standards for ANSI. This N311-91065 series spiral point tap has an oxide finish, and has fractional inch measurements. It is non-coolant through, has right hand direction with a 2-15/16 inch length. Plus it has three flutes and a straight shank.