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API drill bts factory IADC126 4 3/4 mainchesi (120mm)
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API Ma cones atatu IADC126 mainchesi 4 5/8 (118mm) obowolera zitsime
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Ma drill bits opangidwa ndi API IADC126 mainchesi 5 1/4 (133mm) a miyala yolimba
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Ma tricone bits obowolera zitsime ali m'sitolo IADC126 6inches (152mm)
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API Tricone drill bit IADC126 mainchesi 9.5 (241mm) yogulitsa
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Chidutswa chobowolera zitsime IADC127 mainchesi 3 7/8 (98.4mm)
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Wopanga ma Tricone bits IADC127 mainchesi 4 9/16 (115.9mm)
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Kuboola kwa API tricone IADC127 mainchesi 4 5/8 (118mm) kogulitsa
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Fakitale ya Tricone bits IADC127 mainchesi 5 7/8 (149mm) yoboola zitsime zolimba
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Fakitale ya sealed bits IADC127 mainchesi 6 (152mm)
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Ma bits obowola alipo IADC127 mainchesi 7 7/8 (200mm)
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Ma tricone bits otsika mtengo IADC127 9 5/8 ” (244.5mm)