Foundation Piling Rig Core Barrel with Roller Bit Beijing Superior Drilling Equipment Co., Ltd. Base Info Model NO.:Spa38Trademark:SUPERIORTransport Package:Wooden CaseOrigin:ChinaHS Code:8207191000 Description Pre:Plate Type/Eagle Claw Pilot Bit Next:Factory Supply 8 1/2" IADC 637 Foundation Roller Cone