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API drill bits factory IADC216 4.5 intshi (114mm)
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Iibhithi ze-roller cones umboneleli IADC216 5 5/8 intshi (143mm)
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Amasuntswana erola atywiniweyo IADC216 5 7/8intshi (149mm)
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Amasuntswana amazinyo agayiweyo IADC216 6.5 intshi (165mm) xa kugrunjwa umthombo
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Tricone bits kwisitokhwe IADC216 6 3/4 intshi (171mm)
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I-API tricone yokomba i-IADC216 7 5/8 intshi (194mm) yokucoca i-oyile
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I-Rotary dill bit IADC216 7 7/8 intshi (200mm)
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Umboneleli weebhithi ezijikelezayo IADC216 10 5/8 intshi (269mm)
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Thenga amasuntswana okomba IADC216 17.5″ (444.5mm)
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API trione drill amasuntswana ixabiso IADC216 4 5/8 intshi (118mm)
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Amasuntswana etricone enzulu IADC216 6 intshi (152mm)
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API yokomba amasuntswana amasuntswana umboneleli IADC216 5 3/4 intshi (146mm)