This jobber length drill bit is made of high speed steel and has a 5/16 inch diameter shank. It is not rated for any standards. This jobber length drill bit has a TiN finish, and has letter measurements. It is non-coolant through with a 4⅝ inch length. Plus it has one 3 5/16 inch parabolic flutes, a straight shank, and a 135 Degrees split point drill point.