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Oanpaste boarringsbits IADC127 14 3/4 "(374mm)
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Groothandel tricone bits IADC127 17.5 inch (444.5mm)
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Cement plug boorbits IADC127 4 3/4 inch (120mm)
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Bit foar boarring IADC127 3 7/8" inch (98.4mm)
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API tricone drilling IADC127 4 5/8 inch (118mm) te keap
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Sealed bits fabryk IADC127 6 inch (152mm)
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Djippe boarringsbits IADC127 12 1/4 "(311mm)