Our production
| Name: | 4 Inch DTH Bit |
|---|---|
| Type: | High Air Pressure DTH Bit |
| Size: | 4 inch DTH Bit |
| Model: | DHD340/COP44/SD4/QL40/M4 |
| Diameter: | 105-127mm |
| No Air Holes: | 2pcs |
| Weight: | 6-12.3kgs |
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