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Ma tricone bits ogulitsidwa kwambiri IADC117 mainchesi 6 1/4 (159mm)
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Opanga ma Tricone bits IADC117 mainchesi 6 3/4 (171mm)
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Mabowole a Tricone IADC117 mainchesi 7.5 (190mm) a chitsime cholimba cha miyala
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Ma tricone rock bits IADC117 mainchesi 7 7/8 (200mm)
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Fakitale ya API ya tricone rock drill bits IADC117 mainchesi 8 1/2 (216mm)
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Wopereka ma API drill bits IADC117 8 3/4 mainchesi (222mm) obowolera zitsime
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Ma API Rotary roller bits IADC117 9.5 mainchesi (241mm) alipo
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Mtengo wa ma bits a Tricone IADC117 mainchesi 9 7/8 (250mm)
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Ma tricone bits opangidwa mwamakonda IADC117 mainchesi 13 5/8 (346mm)
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Zidutswa zobowola zitsime zaku China IADC117 mainchesi 17.5 (444.5mm)
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Kuboola kwa API triocne IADC125 mainchesi 17 1/2 (444.5mm)
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Wogulitsa Milled Tooth Bits IADC126 mainchesi 4.5 (114mm)