Vacuum Brazed Technology Multi-purpose for grinding inner edge Enlarge holes after drilling wor
| Dia | Workable/Total Length | Thread |
| 10mm | 40mm | M14Thread or 5/8-11Thread |
| 20mm | 40mm | M14Thread or 5/8-12Thread |
| 25mm | 40mm | M14Thread or 5/8-13Thread |




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