This VEVOR electric trailer dolly is a motorized mover designed to help position and maneuver small to medium trailers, RVs, and boats with less effort. It features an 800W brushless motor, a durable steel frame, and an anti-tip design to help keep towing stable during turns. Dual hitch balls (1-7/8 in and 2 in) and adjustable height settings help it fit common trailer setups. All-terrain tires and swivel casters improve traction and maneuverability on surfaces like concrete, grass, and compact dirt. Variable-speed forward/reverse control supports precise parking in tight spaces.