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Iibhithi zamazinyo ze-API mill zisesitokhweni se-IADC127 9.5 intshi (241mm)
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Iibhithi zokugrumba imithombo enzulu i-IADC127 13 5/8 ” (346mm) zikho esitokhweni
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Umthengisi wee-roller cones bits IADC216 5 5/8 intshi (143mm)
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Iibhithi zerola ezivaliweyo IADC216 5 7/8inches (149mm)
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Iibhithi zeTricone zisesitokhweni IADC216 6 3/4 intshi (171mm)
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I-Rotary dill bit IADC216 7 7/8 intshi (200mm)
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Umthengisi weebhithi zeRotary IADC216 10 5/8 intshi (269mm)
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Thenga iibhithi zokubhola i-IADC216 17.5″ (444.5mm)
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Iibhithi zeTricone IADC217 4.5 intshi (114mm) zokugrumba imithombo yamanzi anzulu
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I-API sealed roller cone bit yokugrumba i-IADC217 5 7/8 intshi (149.2mm)
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Umthengisi weebhithi ze-API IADC217 8 3/4 intshi (222.2mm)
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iibhithi zokubhola ezithengiswa ngobuninzi i-IADC217 17.5 intshi (444.5mm)