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API tricone drilling IADC216 7 5/8 inches (194mm) yerig yemafuta
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Mabhiti matatu emakoni emufekitori IADC217 3 7/8 inches (98mm)
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Zvidimbu zvekuboorera zvinotenderera IADC217 6 inches (152mm)
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API yakagayiwa mazino matatu mabhiti IADC217 7.5 inches (190mm) aripo
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Zvidimbu zvemazino zvesimbi yesimbi yeAPI oiri IADC217 8.5 inches (215mm) zvekuboorera matombo
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Zvidimbu zvekuboorera matsime akadzika IADC217 11 5/8 inches (295.3mm) zvedombo rakaoma
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Zvidimbu zvemazino zveAPI Mill IADC217 12 1/4 inches (311mm) zvekuboorera tsime
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Zvidhinha zvekuboorera zvine mutengo wakaderera IADC217 14 3/4 inches (374mm) zvedombo rakaoma