This jobber length drill bit is made of high speed steel and has a 7/32 inch diameter shank. It is designed for use with composite. This jobber length drill bit has a TiN finish, and has fractional inch measurements. It is non-coolant through with a 3¾ inch length. Plus it has 3¾ inch spiral flutes, a straight shank, and a 135 Degrees split point drill point.