| Types: | Dry (without hole), Wet (With Hole for Water Flushing) |
| Thread Type: | M16, ½ BSW |
| Size: | 27mm, 29mm, 30mm, 32mm |
| Tip Types: | Coal or Stone |
| Make: | SDC |
Other Names – Roof Bolting Drill Bit, 27mm Coal Drill Bit, 27mm Stone Drill Bit, SDC 27mm Drill Bits.
| Thread Type: | M16 |
| Size: | 27mm, 29mm, 30mm, 32mm, 43mm |
| PDC Shape: | half, whole, half + whole |
| Flush Hole: | 6mm |
| Make: | SDC |
Other Names – Coal Mining PDC Drill Bit, ½ PDC Drill Bit, 27mm ½ PDC Drill Bit for Roof Bolting and Diamond Bit for Roof Bolting, SDC Drill Bit
