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API TCI tricone rock bit IADC637 6 3/4″ (171.4mm)
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Mtengo wa API Tricone bit IADC637 8 1/2 ” (215.9mm)
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Chobowolera cha batani chozungulira IADC617 mainchesi 12 1/4 (311mm)
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Wopanga ma bits a API tricone drill IADC637 12 1/4 ” (311.1mm)
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Chidutswa chobowolera chachitsulo chotsekedwa IADC637 14 3/4” (374.6mm) cha chitsime chakuya
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Ma cones atatu IADC637 17 1/2” (444.5mm)
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Wopereka ma Tricone bits IADC637 mainchesi 6.5 (165mm) a miyala yolimba
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Ma Rotary Roller Bits IADC637 9 7/8 ” (250.8mm)
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Fakitale ya API ya Roller cone bit IADC637 3 7/8″ (98mm) ilipo
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Wopereka mabatani a IADC637 7 7/8 ” (200mm)
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Ma bits a tricone rock a API IADC637 9 5/8 ” (244.5mm) alipo
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TCI tricone bit IADC617 6 1/2″ (165mm) ya chipangizo chobowolera