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API Mill tooth bits IADC217 12 1/4 inches (311mm) bakeng sa ho cheka seliba
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Likotoana tsa ho cheka tsa theko e tlase IADC217 14 3/4 inches (374mm) bakeng sa lejoe le thata
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likotoana tsa ho cheka ka bongata IADC217 17.5 inches (444.5mm)
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4 1/4 Inches PDC Hula Bit 3 Blades
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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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API tungsten carbide kenya rock dill bit IADC627 3 7/8″ (98mm) setokong
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Rotary rolara hanyane IADC627 8 1/2 ″ (215mm/216mm)