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Isivinini esikhulu se-tungsten carbide drill bits IADC537 5 7/8″ (149mm)
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I-Tricone rock bits IADC537 6 amayintshi (152.4 mm)
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I-Rotary trione bit IADC537 6 1/4 amayintshi (159 mm)
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I-TCI trione rock bits IADC537 6 3/4″ (171mm)
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Inkinobho ye-API bit IADC537 6.5 amayintshi (165mm) ngentengo ehlisiwe
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I-TCI rock bit IADC537 7 1/2 ” (190 mm)
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I-API factory trione bit IADC537 7 5/8 ” (193.7 mm)
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I-TCI trione bit IADC537 7 7/8 amayintshi (200 mm)
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I-Tungsten Carbide Insert Bit IADC537 8 1/2″(215.9mm)
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Inkinobho ye-API ye-rock drill bit IADC537 8 3/4″(222.2mm) enenani elehlisiwe
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I-TCI drill bit IADC537 9 1/2″(241mm) ye-hard rock oilwell
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I-API rock well drilling bits IADC537 10 5/8 amayintshi (269mm)