Leave the past behind with the revolution ferris wheel building set from k39nex this motorized rail driven rotating ferris wheel can spin both clockwise and counterclockwise at two different speeds this set comes with 344 parts primarily rods and connectors to build a k39nex thrill ride and if collect the clock work roller coaster building set and the infinite journey roller coaster building set sold separately you can have a working amusement park right in your home requires 2