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High speed tungsten carbide drill bits IADC537 5 7/8″ (149mm)
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Tricone rock bits IADC537 6 inches (152.4 mm)
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Rotary tricone bit IADC537 6 1/4 inches (159 mm)
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TCI trione rock bits IADC537 6 3/4 ″ (171mm)
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API bhatani bhiti IADC537 6.5 inches (165mm) nemutengo wakaderedzwa
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TCI rock bit IADC537 7 1/2 ” (190 mm)
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API fekitori trione bit IADC537 7 5/8 ” (193.7 mm)
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TCI trione bit IADC537 7 7/8 inches (200 mm)
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Tungsten Carbide Insert Bit IADC537 8 1/2″(215.9mm)
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API bhatani dombo drill bit IADC537 8 3/4 ″ (222.2mm) nemutengo wakaderedzwa
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TCI drill bit IADC537 9 1/2 ″(241mm) ye hard rock oilwell
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API rock well drilling bits IADC537 10 5/8 inches (269mm)