Roller Cone Pilot Bit 152.4mm Beijing Superior Drilling Equipment Co., Ltd. Base Info Model NO.:Roller cone pilot bit 152.4mmMaterial:Tungsten CarbideUsage:HDD Drilling ToolsTrademark:FEILONGTransport Package:CartonSpecification:152.4mmOrigin:ChinaHS Code:82071910 Description Pre:Top Quality Steel Tooth Tricone Bit for Water Well Drilling Next:PDC Bit