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Ma bits obowola alipo IADC127 mainchesi 7 7/8 (200mm)
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Ma tricone bits otsika mtengo IADC127 9 5/8 ” (244.5mm)
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Mutu wozungulira wa rig IADC127 9 7/8 ” (250.8mm)
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Ma cones atatu ozungulira IADC127 11 5/8 ” (295mm)
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Zidutswa zobowola zitsime zozama IADC127 12 1/4 ” (311mm)
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Ma biti obowolera zitsime okonzedwa mwamakonda IADC127 14 3/4 ” (374mm)
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Ma tricone bits ogulitsidwa kwambiri IADC127 mainchesi 17.5 (444.5mm)