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165mm Chevron Drag Drill Bit 6.5 Inch API 3 1/2" For Mining2019-08-14 15:20:16 |
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Chevron Step Drag Bit Carbide Blade Drag Bit 2 3/8"~6 5/8" API reg pin2019-08-14 15:20:16 |
6'' - 152mm Blue Api 2 3/8'' Reg Chevron Bits For Water Well Drilling2019-08-14 15:20:16 |