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Uruganda rwa API rwa TCI tricone bit IADC617 5 5/8 ″ (142.9mm)
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API rotary tricone bit IADC617 6 ”(152mm) yo gucukura neza
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Tricone urutare biti IADC617 8 1/2 ″ (215.9mm) yo gucukura neza
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API ikora urutare rwa tricone bit IADC617 9 7/8 inches ”(250mm)
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Uruganda rwa API rwa tricone roller bit IADC617 12 1/4 santimetero (311.1mm)
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Uruganda rwa API rwo gucukura amabuye IADC617 17 1/2 santimetero (444.5mm) mububiko
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TCI tricone bit IADC617 6 1/2 ″ (165mm) yo gucukura