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Chigadzirwa chezvidhinha zvese IADC127 6 1/4 inches (158.8mm)
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Mupi weTricone bits IADC127 7.5 inches (190mm)
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Zvidimbu zvekuboorera zveAPI rig IADC127 8 1/2 inches (215mm) zvedombo rakaoma
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Zvidimbu zveTricone zviripo IADC127 8 3/4 inches (222mm)
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Zvidimbu zvemazino zveAPI mill zviripo IADC127 9.5 inches (241mm)
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Zvidimbu zvekuboorera matsime akadzika IADC127 13 5/8 ” (346mm) zviripo
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Zvidimbu zvekuboorera simende IADC127 4 3/4 inches (120mm)
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Chidimbu chekuboorera tsime IADC127 3 7/8″ inches (98.4mm)
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Mugadziri weTricone bits IADC127 4 9/16 inches (115.9mm)
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API tricone drilling IADC127 4 5/8 inches (118mm) iri kutengeswa
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Chigadzirwa cheTricone bits IADC127 5 7/8 inches (149mm) chekuchera matsime akaomarara
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Fekitori yezvidimbu zvakavharirwa IADC127 6 inches (152mm)