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Ama-cones amathathu i-IADC517 13 5/8″ (346mm)
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I-API inkinobho yokubhola i-IADC517 17 1/2″ (444.5mm)
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I-API rotary tricone bit IADC617 6 ” (152mm) yokubhoboza umthombo
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I-Tricone rock bit IADC617 8 1/2″ (215.9mm) yokubhoboza umthombo
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Umkhiqizi we-API we-tricone rock bit IADC617 9 7/8 inches” (250mm)
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Ifektri ye-API ye-tricone roller bit IADC617 12 1/4 amayintshi (311.1mm)
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Ifektri ye-API yezingcezu zokubhoboza amatshe i-IADC617 17 1/2 inches (444.5mm) isesitokweni
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I-API tungsten carbide insert rock dill bit IADC627 3 7/8″ (98mm) isesitokweni
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Ibhithi le-roller elijikelezayo i-IADC627 8 1/2″ (215mm/216mm)
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I-Tricone roller bit IADC637 4 3/4″ (120mm) yokubhoboza amatshe aqinile
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I-Ball tooth tricone biit IADC637 5.5″ (140mm)
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Ifektri ye-API ye-TCI tricone biit IADC637 6 “(152.4mm) isikhona esitokweni