The ultimate lightweight aluminum hand dolly. With its air-filled wide tires this dolly easily transports many small boats, canoes, kayaks up to 300 pounds. The dolly can be assemble at 3 different length 11', 7.5', 4'to fit your needs. Very easy storage. Shipping weight 50 pounds. Assembled width 53". Trailer adaptor fits ball dia 1 7/8", groove width 2".