Irwin Industrial Tools 63137 Cobalt Fractional Straight Shank Jobber Length Metal Index Drill Bit Set, 15-Piece Review
Irwin Industrial Tools 63137 Cobalt Fractional Straight Shank Jobber Length Metal Index Drill Bit Set, 15-Piece Feature
- Constructed of M-42 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-Degree split point reduces feed pressure for easier penetration without work hardening
