THK555002 - WIND POWER 2.0 ELECTRICITY GENERATING TURBINESBuild windpowered generators to energize your electric vehicles and charge your rechargeable batteries! The wind spins the turbine which turns an electric generator which in turn charges your rechargeable AA batteries (not included). You can then use those windcharged batteries to power the model vehicles you build. The six models include a glider sail car jet car tractor race car and tricycle. This kit includes two styles of wind turbine blades and a