Titanium nitride coating extends the life of the bit; lasts up to six times longer than standard high speed steel drill bitsHeavy-duty web design provides extreme rigidity when drilling in metal applicationsShorter cutting lips reduce torque when drilling in high tensile strength materials135-degree split point reduces feed pressure for easier penetration without work hardening Size- 3/8"Twist Length- 3-5/8"Overall Length- 5"