HWG / HX Impregnated Diamond Core Bit
| Size | HWG / HX | Design | DCDMA |
| 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) | 76.33 | Inner diameter MAX (in) | 3.005 |
| Inner diameter MIN (mm) | 76.08 | Inner diameter MIN (in) | 2.995 |
| Hole diameter (mm) | 99.2 | Hole diameter (in) | 3.91 |
| Core diameter (mm) | 76.2 | Core diameter (in) | 3.0 |
| Hole area (cm2) | 72.8 | Hole area (in2) | 11.29 |
| Core area (cm2) | 45.6 | Core area (in2) | 7.07 |
