| d | d1 | l2 | l1 |
| 1.6 | 4 | 2 | 35.5 |
| 2 | 5 | 2.5 | 40 |
| 2.5 | 6.3 | 3.1 | 45 |
| 3.15 | 8 | 3.9 | 50 |
| 4 | 10 | 5 | 56 |
| 5 | 12.5 | 6.3 | 63 |
| 6.3 | 16 | 8 | 17 |
When one end dulls, turn the countersink around for a fresh cutting edge. The 60° countersink angle is compatible with the profile of centers on a lathe. These countersinks have a small drill point on the tip for drilling and countersinking holes with the same tool. The drill point creates a small gap that prevents damage to the points of live or dead centers.