Micro wind turbine develops children's practical skills and develops interestsOOTDTs: This model is used for producing all kinds of small technology, modeling, etc. Small size and good demonstration effect. It is a good teaching tool for wind power generation. A good choice for teaching the physical principle of DC wind generation.Since the model is packed with complete sets of accessories, you need to assemble by yourself, just enjoy the fun DIY.Ma the big size, no noise, good demonstration effect, is a very good demonstration tool for DC wind generation.To improve the display effect, the turbine needs to be powered by a right-angle fan or blow dryer instead of natural wind. Specification: Material: Metal + ABS Motor Diameter 24.5mm/0.96inch Motor Height 34.2mm/1.35inch Output Shaft 2.0mm/0.08inch Diameter Output Shaft 13.5mm/0.53inch Length Output Voltage: 0.1V-5.5V Packing Includes: 1 x DC Vertical Wind Turbine Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement.