Titanium nitride coated bits are long lasting and reduces friction. For use in repetitive metal drilling applications. 135 deg split point. Fractional straight shank jobber length. Set includes: 1/16 in, two 5/64 in, 3/32 in, two 7/64 in, 1/8 in, two 9/64 in, 5/32 in, 3/16 in, 7/32 in, 1/4 in, 5/16 in and 3/8 in bit.