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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We provide 7 main thread types: 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 | Carbide Dimension | Dimensions D | Flushing Hole | |||||
|---|---|---|---|---|---|---|---|---|
| Gauge No. | [mm] | Front No. | [mm] | [mm] | [in] | Front | Side | |
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5 | 11 | 2 | 9 | 48 | 1 7/8" | 1 | 1 |
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6 | 9.5 | 3 | 8 | 45 | 1 3/4" | 3 | 1 |
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6 | 10 | 3 | 8 | 48 | 1 7/8" | 3 | 1 |



