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Boarbits op foarried IADC127 7 7/8 inch (200mm)
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Koarting tricone bits IADC127 9 5/8 ” (244.5mm)
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Draaiende kop foar rig IADC127 9 7/8 ” (250.8mm)
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3 kegelfoarmige rolbits IADC127 11 5/8” (295mm)
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Djippe putboarringsbits IADC127 12 1/4” (311mm)
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Oanpaste putboarringsbits IADC127 14 3/4” (374mm)
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Gruthannel tricone bits IADC127 17.5 inch (444.5mm)