- Self-pulling thread for accurate drilling
- 6-10mm cylindrical shank. 12 – 25mm hexagonal shank.
- Peripheral cutting edge allows clean holes with minimal spalling
- Spiral groove shape 'LEWIS’ allows maximum chip transport and high drilling progress
Irwin Auger drill bits have a durable hardened cutting edge for long life in tough materials, including nail-embedded wood. Fully-forged bit for maximum durability and wide flutes for maximum chip removal and less binding with an aggressive screw-pitch for faster drilling.