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Customizedl byen perçage Bits IADC127 14 3/4 "(374mm)
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Wholesale tricone Bits IADC127 17.5 pous (444.5mm)
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Siman ploge perçage Bits IADC127 4 3/4 pous (120mm)
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Bit pou perçage byen IADC127 3 7/8″ pous (98.4mm)
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API tricone perçage IADC127 4 5/8 pous (118mm) pou vann
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Sealed Bits faktori IADC127 6 pous (152mm)
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Bits perçage byen fon IADC127 12 1/4 "(311mm)