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API iqhosha drill bit IADC517 17 1/2″ (444.5mm)
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Umzi-mveliso we-API we-TCI i-tricone bit IADC617 5 5/8″ (142.9mm)
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I-API ejikelezayo i-tricone bit IADC617 6 ” (152mm) yokomba umthombo
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Tricone rock bit IADC617 8 1/2″ (215.9mm) yokomba umthombo
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API umenzi wetricone rock bit IADC617 9 7/8 intshi” (250mm)
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I-API yomzi-mveliso we-tricone roller bit IADC617 12 1/4 intshi (311.1mm)
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Umzi mveliso we-API wokomba wamatye IADC617 17 1/2 intshi (444.5mm) kwisitokhwe
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I-API tungsten carbide ifake i-rock dill bit IADC627 3 7/8″ (98mm) kwisitokhwe
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I-Rotary roller bit IADC627 8 1/2″ (215mm/216mm)
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I-roller cone drill biit IADC637 4 5/8″ (118mm)
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Tricone roller bit IADC637 4 3/4″ (120mm) yokomba amatye aqinileyo
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Ibhit yezinyo lebhola IADC637 5.5″ (140mm)