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Gedichte lagerboor bts IADC126 9 7/8 inch (250mm)
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Tricone drill bits leveransier IADC126 12 1/4 inch (311mm) foar boarring
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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)
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Diamant tricone bit IADC216 7.5 inch (190mm)
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Tricone bits fabryk IADC216 9 7/8 inch (250.8mm)