KAT DRILLING
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Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We have mainly 7 threads: R25, R28, SR28, R32, SR35, and R35. Diameter: 38-127mm, They can be used with button bits, cross bits and reaming products.
| Button bit R25 | Carbide dimension | Dimensions D | Flushing hole | |||||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | |||||||
| [No.] | [mm] | [No.] | [mm] | [mm] | [in] | Front | Side | |
 |
5 | 7 | 2 | 7 | 32 | 1 1/4" | 1 | 1 |
| 5 | 7 | 2 | 7 | 33 | 1 5/16" | 1 | 1 | |
| 5 | 8 | 2 | 7 | 35 | 1 3/8" | 1 | 1 | |
| 5 | 8 | 2 | 7 | 36 | 1 13/32" | 1 | 1 | |
| 5 | 9 | 2 | 7 | 38 | 1 1/2" | 1 | 1 | |
| 5 | 9 | 2 | 9 | 41 | 1 5/8" | 1 | 1 | |
| 5 | 9.5 | 2 | 8 | 43 | 1 11/16" | 1 | 1 | |
| 5 | 10 | 2 | 9 | 45 | 1 3/4" | 1 | 1 | |
| 5 | 11 | 2 | 9 | 48 | 1 7/8" | 1 | 1 | |
| 5 | 11 | 2 | 10 | 51 | 2" | 1 | 1 | |
