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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We provide 7 main thread types to meet various engineering needs: R25, R28, SR28, R32, SR35, and R35. These tools are designed for high efficiency and durability in rock drilling applications.
| Button Bit R25/SR25 | Carbide Dimension | Dimensions D | Flushing Hole | |||||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | |||||||
| [No.] | [mm] | [No.] | [mm] | [mm] | [in] | Front | Side | |
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5 | 9 | 2 | 7 | 38 | 1 1/2" | 1 | 1 |
| 5 | 9 | 2 | 9 | 41 | 1 5/8" | 1 | 1 | |
| 5 | 11 | 2 | 10 | 51 | 2" | 1 | 1 | |
| Flat Face / Retrac | 6 | 10 | 3 | 9.5 | 51 | 2" | 3 | 1 |





