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Fandavahana API bts orinasa IADC126 4 3/4 santimetatra (120mm)
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API Bitika telo kônina IADC126 4 5/8 santimetatra (118mm) ho an'ny fandavahana lavadrano
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Bibikely fandavahana namboarina API IADC126 5 1/4 santimetatra (133mm) ho an'ny vato mafy
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Bibikely Tricone ho an'ny fandavahana lavadrano misy IADC126 6 santimetatra (152mm)
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Fandavahana API Tricone IADC126 9.5 santimetatra (241mm) amidy
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Biby fandavahana lavadrano IADC127 3 7/8″ santimetatra (98.4mm)
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Mpanamboatra borosin-kazo Tricone IADC127 4 9/16 santimetatra (115.9mm)
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Fandavahana tricone API IADC127 4 5/8 santimetatra (118mm) amidy
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Orinasa mpanao "tricone bits" IADC127 5 7/8 santimetatra (149mm) ho an'ny fandavahana lavadrano mafy
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Bitika voaisy tombo-kase avy amin'ny orinasa IADC127 6 santimetatra (152mm)
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Bibikely fandavahana misy IADC127 7 7/8 santimetatra (200mm)
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Bits tricone fihenam-bidy IADC127 9 5/8” (244.5mm)