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API button bit IADC537 6.5 inches (165mm) with discounted price
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TCI petra bit IADC537 7 1/2 » (190 mm)
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API officina tricona bit IADC537 7 5/8» (193.7 mm)
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TCI triconus bit IADC537 7 7/8 dig (200 mm)
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Tungsten Carbide Insert Bit IADC537 8 1/2″(215.9mm)
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API button petra terebro frenum IADC537 8 3/4″(222.2mm) pretio discounted
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TCI terebra frenum IADC537 9 1/2″(241mm) ad petram durum oleum
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API petram bene exercendis frena IADC537 10 5/8 dig (269mm)
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API tres conos bit IADC537 11 5/8″(295mm) pro bene arduo
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Rotatus tri-conus bit IADC537 12 1/4″(311mm)
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Metallum signatum Absit Orientis petram EXERCITATIO frenum IADC537 13 5/8″(346mm)
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API triconum terebra frenum IADC537 14 3/4″ (374mm) saxum durum