This M2 spiral point tap is made of high speed steel and has a 0.255 inch diameter shank. It is designed for use with all materials, and meets the standards for ANSI. This T311-90805 series spiral point tap has a TiCN finish, and has fractional inch measurements. It is non-coolant through, has right hand direction with a 2½ inch length. Plus it has two flutes and a straight shank.