N/a manufacturer / supplier in China, offering Trenching Cutter Bullet Teeth Kewei (B47K22H) Carbide Bullet Teeth Shank Trenching Conical Pick Foundation Drilling Tools, B47K22h Tungsten Carbide Bullet Teeth for Foundation Drilling Tunneling Rock Core, Conical Pick Tools Tungsten Carbide Tip Trench Foundation Piling Rig Auger Drilling Bullet Bits Used for Coal Mining and so on.