Professional reviews from industry experts IRWIN Drill Bit Set, Cobalt, Jobber, Fractional, 21-Piece (63221)
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| Material | Cobalt |
| Finish Type | Titanium Nitride, Black Oxide |
| Shank Type | Straight |
| Cutting Angle String | 135 Degrees |
| Brand | Irwin Tools |
- Drill bits are made of M-42 5% cobalt high-speed steel for super abrasive resistance in tough metals
- 135° split point reduces feed pressure for easy penetration without work hardening
- Each drill bit has a heavy-duty spiral flute design that produces faster chip ejection
- Shorter cutting lips reduce torque for drilling in high-tensile-strength materials
- Cobalt drill bit set comes in a metal index case
- 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
Product Description
Product Description
This IRWIN Cobalt High-Speed Steel Drill Bit Set includes drill bits made of M-42 5% cobalt high-speed steel for super abrasive resistance in tough metals. The 135° split point reduces feed pressure for easy penetration without work hardening, while the heavy-duty spiral flute design produces faster chip ejection. These versatile drill bits come in a metal index case for easy transport and organization.
From the Manufacturer
Irwin Industrial Tools 63221 Cobalt Fractional Straight Shank Jobber Length - Metal Index - 21-Piece Set. Irwin offers a complete line of Metal Twist Drill Bits, including Black Oxide, Turbo Point, Titanium Nitride and Cobalt Drill Bits.
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