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API feme ea TCI trione bit IADC617 5 5/8″ (142.9mm)
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API rotary trione bit IADC617 6 ” (152mm) bakeng sa ho cheka seliba
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Tricone rock bit IADC617 8 1/2 ″ (215.9mm) bakeng sa ho cheka seliba
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Moetsi oa API oa trione rock bit IADC617 9 7/8 inches” (250mm)
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API feme ea trione roller bit IADC617 12 1/4 inches (311.1mm)
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Feme ea API ea likotoana tsa ho cheka majoe IADC617 17 1/2 inches (444.5mm) setokong
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TCI tricone bit IADC617 6 1/2 ″ (165mm) bakeng sa mochini oa ho cheka