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API iqhosha bit IADC537 6.5 intshi (165mm) ngexabiso elithotyiweyo
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TCI rock bit IADC537 7 1/2 ” (190 mm)
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I-API yomzimveliso we-tricone bit IADC537 7 5/8 ” (193.7 mm)
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TCI trione bit IADC537 7 7/8 intshi (200 mm)
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Faka iBit yeTungsten Carbide IADC537 8 1/2″(215.9mm)
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Iqhosha le-API loqhelwa ilitye kancinci IADC537 8 3/4″(222.2mm) ngexabiso elithotyiweyo
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I-TCI drill bit IADC537 9 1/2″ (241mm) ye-oilwell yelitye eliqinileyo
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Amasuntswana okomba amatye e-API IADC537 10 5/8 intshi (269mm)
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API iicones ezintathu bit IADC537 11 5/8″ (295mm) ukuba nzima kakuhle
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Iyajikeleza i-tri-cone bit IADC537 12 1/4″(311mm)
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Intsimbi etywiniweyo yokomba ilitye laseMpuma IADC537 13 5/8″(346mm)
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I-API trione drill bit IADC537 14 3/4″ (374mm) yelitye eliqinileyo