... impact wrench 1 self-contained heavy duty 2 high power two cycle engine 3 higher fastening torque 4 17.95kg gasoline engine impact ... (gasoline:2 cycle oil) Revolution(idling): 2700rpm(+,-250) Revolution(loaded,impact): 7120rpm Revolution(non loaded,max): 9880rpm Maximum Output: 2.3Ps ... fastening torque4 enormours light weight 5 railroad use gasoline engine impact wrench