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Umubiri wibyuma Polycrystalline Diamond Compact Bit 6 1/2 ″ S135 5
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Diyama yo kugurisha 13/16 / 19mm uruganda rukora PDC
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API 8 1/2 ″ PDC Reaming Bits yo gucukura amabuye akomeye
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API Guhinduranya kuzenguruka urutare PDC bits kubutare bukomeye