Build your own self powered robots with this 12 in 1 Solar Hydraulic Construction Kit. The kit contains 212 interchangeable pieces, which can be used to make a variety of different robots, using the easy to follow instructions. Then when you\'ve had your fun with one, it can simply be dismantled and easily transformed into another. The instructions demonstrate how to build 12 different robots based on animals and vehicles such as a t-rex, forklift truck and pterodactyl. If you\'re feeling creative you can use the parts to create anything else you imagine - the possibilities are endless! Each robot you create will have a different way of moving based on the way they look. You won\'t need any batteries as the robots are self-powered either by an included solar panel or water-filled hydraulic power.. Build your own robot kit. Creates 12 different robots based on animals and vehicles. Powered by solar energy and water hydraulics. Educational and recreational. Learn about different kinds of energy. 212 parts. Easy to follow instructions. Approx. dimensions (mm) H 230 W 370 D 75