This general purpose jobber length drill bit is made of carbide and has a 21/64 inch diameter shank. It is not rated for any standards. This jobber length drill bit has a bright (uncoated) finish, and has letter measurements. It is non-coolant through with a four-inch length. Plus it has one 2½-inch spiral flute, a straight shank, a right hand cutting direction, and 118 Degrees conventional point.