13 5/8" API Sealed Bearing Tci Tricone Drill Bit , Button Mining And Oil Well Hole Drill Bit 13 5/8" API sealed bearing tci tricone button bit with mining and oil well IADC517 6 5/8" REG Datas size ...View More
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13 5/8" API Sealed Bearing Tci Tricone Drill Bit , Button Mining And Oil Well Hole Drill Bit