Titanium Nitride coating resists heat and friction Titanium nitride coating extends the life of the bitLasts up to six times longer than standard high speed still drill bitsHeavy-duty web design provides extreme rigidity when drilling in metal applicationsShorter cutting lips reduce torque when drilling in high tensile strength materials135-dregree split point reduces feed pressure for easier penetration without work hardening1-5/8 in. twist length1/8 in. x 2-3/4 in.