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Ma cones atatu a rock bit IADC517 10 5/8″ (269mm)
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Ma Rotary tricone Bits IADC517 9 7/8″ (250mm) a miyala yolimba
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Ma Tricone Roller Bits IADC517 mainchesi 9.5 (241mm)
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Deep Well Tricone Bit IADC517 mainchesi 7 7/8 (200mm)
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Mabatani a TCI otsekedwa ndi miyala IADC517 6 1/2″ (165mm) obowolera zitsime
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Ma Tricone roller drill bits IADC517 6 1/4″ (159mm)
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Ma biti ozungulira a API otsekedwa ndi IADC517 5 1/4″ (133mm) alipo