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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We have mainly 7 thread types: R25, R28, SR28, R32, SR35, and R35. With diameters ranging from 38mm to 127mm, these tools are compatible with button bits, cross bits, and reaming products.





| Product Type | Carbide Dimension | Dimensions D | Flushing Hole | |||||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | |||||||
| [No.] | [mm] | [No.] | [mm] | [mm] | [in] | Front | Side | |
| Button Bit | 5 | 9 | 2 | 9 | 41 | 1 5/8" | 1 | 1 |
| Button Bit | 5 | 9.5 | 2 | 8 | 43 | 1 11/16" | 1 | 1 |
| Button Bit | 5 | 10 | 2 | 9 | 45 | 1 3/4" | 1 | 1 |
| Button Bit | 5 | 11 | 2 | 10 | 51 | 2" | 1 | 1 |
| Flat Face | 6 | 11 | 2 | 9 | 51 | 2" | 2 | 0 |