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API Molendinum dentem freni IADC217 12 1/4 dig (311mm) pro bene exercendis
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Low price EXERCITATIO frena IADC217 14 3/4 inches (374mm) pro duro scopulo
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Lupum terebratio calcaria IADC217 17.5 dig (444.5mm)
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4 1/4 Unciarum PDC Drag Bit 3 Blades
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API officina TCI triconis bl IADC617 5 5/8″ (142.9mm)
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API gyratorius triconus bit IADC617 6« (152mm) pro bene exercendis
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Tricone petra frenum IADC617 8 1/2″ (215.9mm) pro bene exercendis
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API opifex triconis petrae IADC617 9 7/8 dig" (250mm)
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API officina triconis cylindri IADC617 12 1/4 dig (311.1mm)
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API officina petrae EXERCITATIO bits IADC617 17 1/2 pollices (444.5mm) in stock
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API tungsten carbide inserta petra anethi IADC627 3 7/8″ (98mm) in stirpe
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Rotarius cylindrus bit IADC627 8 1/2″ (215mm/216mm)