Sled-Cadyzzz are custom formed to fit your skis using the exclusive Hydro-Turf center, to keep skis firmly in place. Quickly and easily roll your snowmobile around. Four wheels mounted on each aluminum dolly make maneuvering your snowmobile almost effortless on hard surfaces. Built of tough, light-weight aluminum for years of service. Extra heavy duty caster wheel support the heaviest snowmobiles. Sled-Cadyzzz come fully assembled.