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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-TCI trione bit IADC617 6 1/2″ (165mm) yesixhobo sokomba