This is a nice, premium product, Made in USA. Thick UV resistant 5 blades and hub designed for our Cutting Edge Power Cyclone Wind Turbine. It is sized to fit an 3/16" diameter shaft. It is press fit on with 5 set screws included to lock the blade to the shaft. These blades are tested in an engineering wind tunnel. Aerodynamic grooves on the blades create a thin turbulent boundary layer on the surface, which allows the blade to flow smoothly through the wind.
This item is still eligible for a 30% tax credit. And it's the perfect opportunity for you to learn and experience with wind energy. One of the ways the world will be powered in the future. These wind turbines performance as well as a big turbine, obviously you won’t get as much power out of these, but they work excellent. You can learn about wind from this item. It’s a good experiment.
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*Charging data determined by actual test results in an engineering wind tunnel. Your results may vary depending on wind velocity, wind direction and other factors.