Top Sales Water Well Drilling Tricone Bits Beijing Superior Drilling Equipment Co., Ltd. Base Info Model NO.:IADC537Customized:CustomizedStandard:APILength:Taper-lengthType:Center Drill BitMaterial:Tungsten CarbideUsage:Well DrillingTrademark:superiorTransport Package:Woodern BoxOrigin:Hebei Description Pre:API 9 7/8" TCI Tricone Rock Bit for Water Well Next:Cheap Price Tricone Bit in China