17 1/2″ NEW 117/217 Tricone Drill Bit 7 5/8″ API Construction, Geotechnical, Geothermal, Industries, Mining, Oil and Gas, Waterwell Skills Posted on July 22, 2021 ← 12 1/4″ NEW 117/217 Tricone Drill Bit 6 5/8″ API
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