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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We provide 7 main thread types: R25, R28, SR28, R32, SR35, and R35. These tools are compatible with button bits, cross bits, and reaming products, designed for high-performance drilling in various geological conditions.
| Button Bit Type | Gauge Carbide | Front Carbide | Dimensions D | Flushing Hole | ||||
|---|---|---|---|---|---|---|---|---|
| Specifications | No. | mm | No. | mm | mm | inch | Front | Side |
| Standard 51R32 | 5 | 11 | 2 | 10 | 51 | 2" | 1 | 1 |
| Button Bit 48mm | 5 | 11 | 2 | 9 | 48 | 1 7/8" | 1 | 2 |
| Button Bit 45mm | 5 | 10 | 2 | 9 | 45 | 1 3/4" | 1 | 1 |
| Button Bit 41mm | 5 | 9 | 2 | 9 | 41 | 1 5/8" | 1 | 1 |