The Trailer Valet XL makes it easy to park or move your trailer of up to 10,000 lbs (4,500 kg) in tight spaces. Take corners and position your trailer exactly as you want it by steering as you move. The XL hooks up to a standard trailer frame via the coupler (or optional bracket) and can be operated manually by using the included hand crank as a trailer hand dolly. For added power, swap out the hand crank with a standard 20-24V cordless drill, and power up your mover for greater ease of use. Low and high gear ability allow switching between precision of control and rapid movement as needed. Each unit comes with never-flat solid rubber tires and an auto-brake function, providing trailer movement safety and security at all times. With a compact design and the power the move larger trailers, the XL is essential for anyone wishing to maneuver and hitch their trailer without manual pulling or backing up the truck. Standard 2 inch and 2 5/16 inch ball converter included. The XL can push a trailer up a 5% (2.8 Degree) grade (will lower capacity); never pull your unit up any kind of incline.One Year Limited Manufacturers Warranty