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IADC637 ifite uburebure bwa 4 3/4″ (120mm) bwo gucukura amabuye akomeye
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Iryinyo ry'umupira rya tricone biit IADC637 5.5″ (140mm)
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Uruganda rwa API rwa TCI tricone biit IADC637 6 “(152.4mm) ruri mu bubiko
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API TCI tricone rock bit IADC637 6 3/4″ (171.4mm)
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Igiciro cya biti bya API Tricone IADC637 8 1/2 ” (215.9mm)
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Agace ko gucukura karimo utubuto two kuzunguruka IADC617 gafite santimetero 311 (12 1/4 santimetero)
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Uruganda rwa API tricone drill bits IADC637 12 1/4 ” (311.1mm)
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Agace k'icyuma gafunganye IADC637 14 3/4” (374.6mm) ko gucukura amazi menshi
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Uduce dutatu tw'udupira IADC637 17 1/2” (444.5mm)
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IADC637 ifite santimetero 165 (165mm) ikora ku ibuye rikomeye
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Uduce tw'urukiramende IADC637 9 7/8 ” (250.8mm)
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Uruganda rwa API rwa Roller cone bit IADC637 3 7/8″ (98mm) ruri mu bubiko