Irwin
- Constructed of M-35 5 percent cobalt high speed steel for super abrasive resistance in tough metals
- Heavy duty spiral flute design produces faster chip ejection
- Shorter cutting lips reduce torque for drilling in high tensile strength materials.
- 135° split point reduces feed pressure for easier penetration without work hardening
9/64", 15/16" twist length, 1-15/16" overall length.