HMLC Impregnated Diamond Core Bit
| Size | HMLC | Design | Triple Tube |
| Outer diameter MAX (mm) | 98.98 | Outer diameter MAX (in) | 3.897 |
| Outer diameter MIN (mm) | 98.60 | Outer diameter MIN (in) | 3.882 |
| Inner diameter MAX (mm) | 63.63 | Inner diameter MAX (in) | 2.505 |
| Inner diameter MIN (mm) | 63.38 | Inner diameter MIN (in) | 2.495 |
Flat W matrix
