Specifically created to spark a child's imagination, the Design range is completely compatible with all portions of the Erector metal range. Unique to this range, flexible metallic components make construction projects challenging, interesting and boundless. The more parts a child has access to, the more creative he or she can become. Builds 23 Models, Nostalgic design based on A.C. Gilbert's original Ferris Wheel set, Brightly colored metal bars, 3V motor (2AA batteries not included), 477 parts