Spring into action! This jumping robot is made from the tracks of an old snowmobile, a waffle iron, and some rubber bands. + Fast and easy to build+ Demonstrates cams, springs, and motors in action+ Powered by an electric motor+ Combine the parts from different ReBotz kits to build your own creations. For Ages 6 and up. WARNING: CHOKING HAZARD – Small Parts. Not for children under 3yrs.