Drill Bit Insert Tungsten Carbide Dome Buttons of Mining Tools Sanmeul Drilling Tools Co., Ltd Base Info Type：Impact DrillUsage：Well DrillingCertification：APITransport Package：Plastic Box , Carton BoxSpecification：1621Origin：China Description Pre：ISO Wireline Impregnated Diamond Core Drill Bit for Geological Exploration Next：Diamond Saw Blades
