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Roller cone drill biit IADC637 4 5/8 ″ (118mm)
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Tricone roller bit IADC637 4 3/4 ″ (120mm) yo gucukura amabuye akomeye
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Umupira w'amenyo tricone biit IADC637 5.5 ″ (140mm)
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Uruganda rwa API rwa TCI tricone biit IADC637 6 “(152.4mm) mububiko
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API TCI tricone urutare bit IADC637 6 3/4 ″ (171.4mm)
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API Tricone biti igiciro IADC637 8 1/2 ”(215.9mm)
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Akabuto ka rotary drill bit IADC617 12 1/4 santimetero (311mm)
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API tricone drill bits ikora IADC637 12 1/4 ”(311.1mm)
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Ibyuma bifunze ibyuma bitobora IADC637 14 3/4 ”(374.6mm) kugirango iriba ryimbitse
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Imirongo itatu yarumye IADC637 17 1/2 ”(444.5mm)
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Tricone bits itanga IADC637 6.5 santimetero (165mm) kubutare bukomeye
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Uruziga ruzunguruka bits IADC637 9 7/8 ”(250.8mm)