This high-performance screw machine drill bit is made of high speed steel. It is not rated for any standards. This screw machine length drill bit has a black oxide finish, and has fractional inch measurements. It has a 135 Degrees drill bit point, with a 2 13/16 inch length. Plus it has two 1⅝ inch spiral flutes, a straight shank, right hand cutting direction, and a 135 Degrees split point drill point.