Made of cobalt steel with fully ground finish for precise dimensions.
Features a 135° split point for precise positioning and fast drilling speed.
Heat treatment to enhance cutting performance and extend service life.
Made of cobalt steel with fully ground finish for precise dimensions.
Features a 135° split point for precise positioning and fast drilling speed.
Heat treatment to enhance cutting performance and extend service life.
| Specification | Specification |
| 1 | 6.5 |
| 1.5 | 6.8 |
| 2 | 7 |
| 2.5 | 7.5 |
| 2.8 | 8 |
| 3 | 8.5 |
| 3.2 | 9 |
| 3.3 | 9.5 |
| 3.5 | 10 |
| 3.8 | 10.5 |
| 4 | 11 |
| 4.2 | 11.5 |
| 4.5 | 12 |
| 4.8 | 12.5 |
| 5 | 13 |
| 5.2 | |
| 5.5 | |
| 6 |
