18 1/2" (470mm) PDC Drill Bit for Oil & Gas Drilling - High Efficiency Rock Breaking in Ultra-Hard Formations XHR Series Features Suitable for .....
Mining Well PDC Drilling Bits 16 Inch API 7-1 Standard Factory Drill Bit Steel Body PDC Bits XHR Series Features Suitable for improving ROP in soft .....
PDC Drill Bits 15 1/2″ 394mm XHR 6163MK for High-Speed Drilling in Soft Formations XHR Series Features lSuitable for improving ROP in soft formation. ...