Design and investigate! Ideal for High School and College levels. Kit includes Solar Panel, [2] Light Wheels with Rubber Tire, [2] lightweight Front Wheels, Wood Blank, Solar Motor, [2] Axles and Axle Holders, [4] Gears, [4] Pulleys, Worm Gear, [2] Wires and a guide to get you started. Requires soldering and hand tools.