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Customizedl amasuntswana okomba IADC127 14 3/4 ” (374mm)
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I-Wholesale tricone bits IADC127 17.5 i-intshi (444.5mm)
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Amasuntswana okomba eplagi yesamente IADC127 4 3/4 intshi (120mm)
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Isuntswana lokugrumba i-IADC127 3 7/8″ intshi (98.4mm)
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I-API trione yokomba i-IADC127 4 5/8 intshi (118mm) iyathengiswa
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Umzi mveliso wamasuntswana atywiniweyo IADC127 6 intshi (152mm)
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Amasuntswana okomba anzulu IADC127 12 1/4 ” (311mm)