BQ NQ HQ PQ wireline core diamond drill bit
Specification:





Specification:
| Specification | Outer dia mm | Inner dia mm | Thread length mm |
| φ56 | 55 | 35 | 40 |
| φ59 | 59.5 | 36 | 40 |
| φ75 | 75 | 49 | 40 |
| φ95 | 95 | 64 | 40 |




