Big Air Ball Tower

K'nex Big Air Ball Tower features a daredevil by the name of Big Air Boz. Like a lot of K'nex toys, you need to follow detailed instructions to build this amazing tower. When completed, you get to enjoy a small trampoline, a motorized airlifter, paddle wheels which spin and spin, spiral loops, and a great variety of other inventive tricks.It's fun to watch the protagonist, Big Air Boz, move about the tower and set off the complicated contractions. All told, this building contains more than 1,300 pieces and runs on four 'C' batteries. You can also get a three foot Big Air Ball Tower for junior builders. The instructions are color-coded, and parents can contact the K'nex customer service department for help during construction if they get stuck.