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API Rotary roller drill bit IADC517 4.5 santimetero (114mm) mububiko
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Button bit IADC517 118mm yo gucukura amabuye ya geothermal.
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Uruganda rwa API ruzunguruka ruzunguruka bit IADC517 4 3/4 ″ (120mm)
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API izunguruka ya buto ifunze bits IADC517 5 1/4 ″ (133mm) mububiko
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Tungsten Carbide Shyiramo gucukura amabuye biti IADC517 5 7/8 ″ (149mm)
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API Nibyiza gucukura tricone bit IADC517 6 ″ (152.4mm) kugurisha
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Tricone roller drill bits IADC517 6 1/4 ″ (159mm)
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TCI ifunze buto ya buto ya bits IADC517 6 1/2 ″ (165mm) yo gucukura neza
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TCI tricone bit IADC517 7 1/2 ″ (190mm)
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Byimbitse Byiza Tricone Bit IADC517 7 7/8 santimetero (200mm)
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API Tricone Bit IADC517 8.5 santimetero (215.90mm)
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API Tricone gucukura bit IADC517 8 3/4 santimetero (222mm) mububiko