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API bhatani drill bit IADC517 17 1/2″ (444.5mm)
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API fekitori yeTCI trione bit IADC617 5 5/8″ (142.9mm)
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API rotary tricone bit IADC617 6 ” (152mm) yekuchera mutsime
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Tricone rock bit IADC617 8 1/2 ″ (215.9mm) yekuchera matsime
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API mugadziri wetricone rock bit IADC617 9 7/8 inches” (250mm)
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API fekitori yetricone roller bit IADC617 12 1/4 inches (311.1mm)
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API fekitori yematombo ekuchera mabhiti IADC617 17 1/2 inches (444.5mm) mustock
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API tungsten carbide isa rock dill bit IADC627 3 7/8 ″ (98mm) mustock
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Rotary roller bit IADC627 8 1/2 ″ (215mm/216mm)
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Roller cone drill biit IADC637 4 5/8″ (118mm)
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Tricone roller bit IADC637 4 3/4 ″ (120mm) yekuchera dombo rakaoma
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Bhora zino trione biit IADC637 5.5 ″ (140mm)