4M Green Science - Make Your Own Windmill Generator
Build this amazing Windmill Generator and learn about recycling and renewable energy. Watch the LED glow as it is powered by free energy from the wind. No batteries required!
Contains 1 rotor, 1 front-housing with gear and rotor shaft installed, 1 back housing, 2 half screw caps, 1 toy motor with gear (generator), 1 motor cover, 8 small screws, 1 LED with wires and detailed instructions, including "How it works: and fun facts. 4M Windmill Generator size is 13cm long.
A plastic bottle is needed to make the Windmill Generator - not included