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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)
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I-API izigaxa ezintathu zincane IADC537 11 5/8″(295mm) ngokuqinile kahle
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Ibhithi ye-tri-cone ejikelezayo IADC537 12 1/4″(311mm)
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Insimbi evaliwe ye-Far Eastern rock drilling bit IADC537 13 5/8″(346mm)
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I-API tricone drill bit IADC537 14 3/4″ (374mm) yetshe eliqinile