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API Bulla terebra frenum IADC517 17 1/2″ (444.5mm)
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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)
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cylindrus conus terebra biit IADC637 4 5/8″ (118mm)
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Triconus cylindrus momordit IADC637 4 3/4″ (120mm) ad cauterium durum EXERCITATIO
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Pila dens triconis biit IADC637 5.5″ (140mm)