Tow Tuff HD Dolly Adjustable Trailer Moves with Caster Unique three wheel design helps to move trailers more easily. Idea for moving utility, boat or cargo trailers. Adjustable ball height from 21"-33". Capacity: 1000 lbs. 2- 16" flat free tires and 1-10" swivel caster. Works with 2" or larger coupler. Heavy duty structure and hammer tone powder-coat finish to resist wear and corrosion. 1 year limited manufacturer's warranty