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Concave Face 8 Inch Size DTH Drill Bits For Shank SD8 , Diameter 203mm2019-08-15 16:11:39 |
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100mm 3 15/16'' DTH Drill Bits With Convex Face2020-10-09 11:09:33 |
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152mm Shank M60 Tungsten DTH Drill Bits For Borehole Drilling2020-03-10 13:40:11 |