Best Combine 3 Cone Drill
Irwin Industrial Tools 10225 Unibit General Purpose Step Drill Bit Set, 4-Piece
Amazon.com
Last update was on: May 15, 2025 3:51 pm
- Single-flute cutting edges for greater control through steps
- 3-flatted shanks prevents slipping in drill chuck
- Non-skid self-starting tips eliminate skidding and the need for center punching
- Sizes clearly laser-etched to make precise drilling easy
- Set includes HSS #1, 2, 4, and 21 size step drills
