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Tricone bits wopanga IADC127 4 9/16 mainchesi (115.9mm)
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Tricone bits fakitale IADC127 5 7/8 mainchesi (149mm) pobowola bwino bwino
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Fakitale yonse ya kubowola IADC127 6 1/4 mainchesi (158.8mm)
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Tricone bits ogulitsa IADC127 7.5 mainchesi (190mm)
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Zobowola mu stock IADC127 7 7/8 mainchesi (200mm)
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API rig kubowola bits IADC127 8 1/2 mainchesi (215mm) for hard rock
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Tricone bits mu stock IADC127 8 3/4 mainchesi (222mm)
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API mphero dzino zitsulo mu stock IADC127 9.5 mainchesi (241mm)
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Kuchotsera ma tricone bits IADC127 9 5/8 ” (244.5mm)
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Mutu wozungulira wa chipangizo cha IADC127 9 7/8 ” (250.8mm)
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3 cones roller bits IADC127 11 5/8 ” (295mm)
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Zobowola zakuya IADC127 13 5/8 ” (346mm) zili mgulu