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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We provide a comprehensive range of threads: R22, R25, R28, SR28, R32, SR35, and R35. With diameters ranging from 38mm to 127mm, these tools are ideal for use with button bits, cross bits, and reaming products.
| Button bit R22 | Carbide dimension | Dimensions D | Flushing hole | |||||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | |||||||
| [No.] | [mm] | [No.] | [mm] | [mm] | [in] | Front | Side | |
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5 | 7 | 2 | 7 | 32 | 1 1/4" | 1 | 1 |
| R22 Series | 5 | 8 | 2 | 7 | 34 | 1 11/32" | 1 | 1 |
| R22 Series | 5 | 9 | 2 | 7 | 38 | 1 1/2" | 1 | 1 |
| R22 Series | 5 | 10 | 2 | 9 | 45 | 1 3/4" | 1 | 1 |







