No Dig HDD Drilling Tricone Bit 6 1 /4 Inch IADC517 Beijing Superior Drilling Equipment Co., Ltd. Base Info Model NO.:6 1 ,4 InchCustomized:CustomizedStandard:AISI, APIMaterial:Tungsten CarbideUsage:Well DrillingTrademark:SuperiorTransport Package:Wooden BoxOrigin:ChinaHS Code:8207199000 Description Pre:Modular Large Diameter Deep Hole Drill/Large Diameter Drill Next:Water Well 7 1/2 " Steel Tooth Tricone Rock Bit