This pilot point drill bit is made of high speed steel and has a 29/64 inch diameter shank. It is designed for use with metal, plastic, wood. This jobber length pilot point drill bit has a gold ferrous finish, and has fractional inch measurements. It is non-coolant through with a 5¾ inch length. Plus it has 4 3/16 inch spiral flutes, a straight shank, and 135 Degrees pilot point drill point.