Our Forstner bits are made from high carbon steel. They can drill wood automatically due to screw tip design. The cutting blade is not only changeable but also re-sharpenable.
| DIA. IN | DIA. MM | DIA. IN | DIA. MM |
| 1" | 25 | 2" | 51 |
| 1-1/8" | 28 | 2-1/4" | 57 |
| 1-1/4" | 32 | 2-9/16" | 65 |
| 1-3/8" | 35 | 3" | 76 |
| 1-1/2" | 38 | 3-5/8" | 92 |
| 1-3/4" | 44 | 4-5/8" | 117 |