Mighty Monster Truck and Go Cart Trailer Sets Boys will love hauling around a sports vehicle go kart with the Mighty Monster Truck and Trailer Set The free-wheeling truck has a realistic suspension system that lets him pretend to haul the detachable trailer over rough terrain. Monster truck: 5-1/2" x 3-1/2" x 3-3/8" Trailer: 5-3/8" x 3-1/4" x 2-3/4" Plastic and die-cast metal For ages 3 and up