Power Caster - The original trailer mover! Maneuver your RV or boat trailer in limited space with this powerful, easy to use and safe electric trailer dolly. Power Caster handles all types of travel trailers (including fifth-wheels), boat trailers, ATV or jet ski trailers using a standard type hitch that has a crank-up jack. 500 lb. tongue capacity. 5,000 lb. laden weight capacity 1/4 horsepower electric motor 400 in.-lbs. of torque @ 30 RPM (120 volts, 4.6 amps) Weight 58 lbs. (boxed shipping weight approx. 79 lbs.)