... buliding site,tunnel,culverts and so on. Rb RB series flexible shaft pumps model discharging diameter(mm) delivery lift(m) flow ... :1.canbe coupled to electric motors,,gasoline engines,diesel engines,flexible shaft pumps 2.no mini order demads3.can supply OEM ... price with the high quality for you: all flexible shafts c/w rubber hoses and all connectors for concrete vibrators,are manufactured ...