... alloy 2) Size:RV025, 030, 040, 050, 063, 075, 090, 110, 130 gearbox1) Made of high quality aluminum alloy2) Light weight ... .06 - 15kW Output torque: 2.7 - 1,760Nm6) Size:RV025, 030, 040, 050, 063, 075, 090, 110, 130 7) Transmission rate: 5 -100