This hub allows you to turn any DC motor into a wind turbine. The hub will press fit onto the shaft of a small DC motor so you can easily attach your own blades and experiment with wind power generation. The hub is designed to allow you to take blades on and off very quickly and easily. 

• Diameter: 2.25 in
• Max number of dowels: 12
• Size of shaft hub press fits onto: 2 mm