Norestar Flip-Up Marine Dinghy Wheels, for Dinghy, Inflatable, Aluminum, RIB, Other Small Boat Easily attaches to almost any boat up to 12'/440 lbs providing effortless boat transport over pavement, beach, or other surface without dragging Easy installation on wood, ?breglass, or aluminum transoms Wheels flip up out of the way when not in use Resistant to the elements including sunlight and salt-water Wheels are maintenance free and self lubricating