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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
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Tricone roller bit yokomba IADC537 15.5″(393.7mm) kwiqula elinzulu
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I-TCI yokugrumba bit IADC537 16″(406.4mm)
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I-Tungsten Carbide Faka i-tricone bit IADC537 17.5″ (444.5mm)
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I-API & ISO trione roller bit IADC537 26″(660.4mm)