You won't want to put this set down. Build 50 seriously awesome models, with Battery powered motor to make them move. Panels and all other K'NEX parts included for maximum building possibilities in one set. Batteries not included. It's over 5 ft. tall and the energy will amaze you.
Balls dart different ways through chutes, wheels, drops and more.
Bonus builds, such as a 3 ft. Ferris Wheel, are also included. You'll enjoy this building challenge. Motor sold separately. Then operate the crane, controlling two motors at once with the amazing Dual Power Controller.