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Gruthannel tricone bits IADC117 6 1/4 inch (159mm)
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Fabrikanten fan Tricone-bits IADC117 6 3/4 inch (171 mm)
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Trikoneboarbits IADC117 7,5 inch (190 mm) foar hurde rotsput
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Trikone rotsbits IADC117 7 7/8 inch (200mm)
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API-fabryk fan tricone rotsboarbits IADC117 8 1/2 inch (216 mm)
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API-boarbits leveransier IADC117 8 3/4 inch (222 mm) foar putboarjen
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API Rotary roller bits IADC117 9.5 inch (241mm) op foarried
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Tricone bits priis IADC117 9 7/8 inch (250mm)
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Oanpaste tricone-bits IADC117 13 5/8 inch (346 mm)
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Sina putboarringsbits IADC117 17,5 inch (444,5 mm)
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API triocne boarjen IADC125 17 1/2 inch (444.5mm)
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Leveransier fan freesde toskbits IADC126 4,5 inch (114 mm)