6 1/8" steel body PDC drill bit
8 1/2"(215.9mm）PDC drill bit oilfield driling bit
12 1/4" (311mm) steel body PDC drill bit water well drill bit
7 7/8" (200mm) PDC bit oil gas drilling bit
7 1/2" (190.5mm) PDC BIT hard rock drill bit tool
8 1/2"(215.9mm）steel body PDC drill bit PDC drilling bit
16"(406mm) IADC517 TCI tricone rock roller cone bit water well drill bit
12 1/4''(311.1mm) IADC 617 TCI Tricone Drill Bit For Rock Drilling
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