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Zvidimbu zveTricone IADC217 4.5 inches (114mm) zvekuboorera matsime ematombo akadzika
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API yakavharwa roller cone bit yekuboorera IADC217 5 7/8 inches (149.2mm)
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Mupi weAPI bits IADC217 8 3/4 inches (222.2mm)
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mabhiti ekuboorera akawanda IADC217 17.5 inches (444.5mm)
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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