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Loha mihodina ho an'ny fitaovana IADC127 9 7/8” (250.8mm)
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Bibikely mihodinkodina kônina 3 IADC127 11 5/8” (295mm)
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Bibikely fandavahana lavadrano lalina IADC127 12 1/4” (311mm)
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Bibikely fandavahana lavadrano namboarina manokana IADC127 14 3/4” (374mm)
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Bits tricone ambongadiny IADC127 17.5 santimetatra (444.5mm)
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Bibikely vato Tricone IADC137 6 santimetatra (152mm) ho an'ny fandavahana lavadrano
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Bibikely misy nify fikosoham-bary ho an'ny fandavahana lavadrano IADC215 17.5 santimetatra (444.5mm)
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API Tricone rock bits IADC215 12 1/4” (311mm) miaraka amin'ny vidiny mirary
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Fandavahana API tricone IADC215 8.5 santimetatra (215.9mm) amidy
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Bibikely fandavahana API orinasa IADC216 4.5 santimetatra (114mm)
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Mpamatsy fitaovana fandavahana API IADC216 5 3/4 santimetatra (146mm)
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Bibikely nify voatoto IADC216 6.5 santimetatra (165mm) ho an'ny fandavahana lavadrano