Irwin 63930 Titanium HSS Fractional Straight Shank Drill Bit, 15/32"Irwin High Speed Steel Fractional Straight Shank Jobber Length Drill Bit is Titanium nitride coated that extends the life of the bit; lasts up to six times longer than standard high speed steel drill bits. Heavy duty web design provides extreme rigidity when drilling in metal applications. Shorter cutting lips reduce torque when drilling in high tensile strength materials. 135 degree split point reduces feed pressure for easier penetration without