Customized Premium Quality Oil Used Tungsten Carbide Insert Cutters Sanmeul Drilling Tools Co., Ltd Base Info Model NO.：Tungsten Carbide Insert CuttersType：Impact DrillUsage：Well DrillingCertification：APITransport Package：Plastic Box , Carton BoxSpecification：CastingOrigin：China Description Pre：3 Wings PDC Concave Drill Bit Next：Nmlc/Hmlc Surface Set Natural Diamond Core Drill Bit/Exploration Core Drilling Bit
