150 mm Oil Type PDC Concave Bit for Water Well Drilling Sanmeul Drilling Tools Co., Ltd Base Info Model NO.：PDC BitType：Non-Core DrillUsage：Well DrillingCertification：APITransport Package：Plastic Box , Carton BoxSpecification：CastingOrigin：China Description Pre：Diamond Saw Blade for Asphalt/Green Concrete Next：API Certificated 5 Blades Oil Petroleum Well Drilling 8 1/2" Diamond PDC Drill Bit
