DIY wind power generation Motor The swinging tail design rotate with changes in wind direction Understanding physics knowledge through hands-on production to enhance children's awareness and ability Cultivate children's thirst for knowledge and interest in learning Size: Motor outer diameter: 24.5mm/0.96Inch Motor height: 31mm/1.28Inch Motor shaft diameter: 2mm/0.079Inch Motor shaft length: 13.5mm/0.53Inch Saw blade diameter is 60mm/2.36Inch Blade aperture: 1.95mm/0.077Inch Total size: about 20cmx13.5cmx9cm/7.87x5.31x3.54Inch Finished product size: 200x190x130mm Output voltage: DC0.1V-3V Output current: 0.01-0.3A Rated speed: 200-6000 rpm Power generation method: direct current Colour:Yellow Material:Plastic Package Contents: 1 * DIY Wind Turbine Generator Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.