Description： Science & Exploration Sets New DIY Miniature DC Wind Power Turbine Model Demonstration Teaching Tool Drive Fan Physical Experiment DIY Miniature DC Wind Power Turbine Model Demonstration Teaching Tool Drive Fan Physical ExperimentThe product is shlpped based on the color or size of the main image of the product page, if you have special requirements, please leave us a message. DIY Miniature DC Wind Power Turbine Model Demonstration Teaching Tool Drive Fan Physical ExperimentSpecification:-Methods of generating electricity: DC-Sizes for electric generator fan:Material: Plastic, MetalMotor diameter: 24.5mmMotor height: 34.2 mm ( including front and rear bearing sleeve)Output shaft diameter: 2.0mmOut put shaft length: 13.5mmWind leaf total diameter: 90 mmBlades aperture: 1.95mm-Sizes for small electric fan: Motor diameter: 24 mmMotor height: 12 mmWind blade diameter: 55 mm Features:-The model is packaged by completely accessory sets ,you can enjoy assemble by yourself;-Small volume and good demonstration effect for wind power generation demonstration teaching tool;-It can also be used for making all sorts of small technology production, model making, etc. Package included: 1 set x Miniature DC Wind Power Turbine Model Demonstration Teaching Tool Drive Fan