7 7/8″ NEW 211 Tricone Drill Bit 4 1/2″ API Construction, Geotechnical, Geothermal, Industries, Mining, Oil and Gas, Waterwell Skills Posted on July 22, 2021 ← 7 5/8″ NEW 211 Tricone Drill Bit 4 1/2″ API 3 3/4″ NEW 637/547/517 Tricone Drill Bit 2 3/8″ API →
Recent Comments