QINIZX 6.9Inch Plastic Fan Blade 11-Leaves with 0.078" Round Bore Motor Accessories Replacement for Electric Fan Blades or DC Power Motor Wind Turbine Electricity Generator Blades Model, 1PC - Fan-Blade-1P

• UPC   780854489137
• Large Fan Blade: Diameter 17.5cm/ 6.9inch, inner hole 2mm/ 0.078inch, Thickness 9mm/ 0.35inch. large size, strong wind. It can be used as a electric fan blades or as a wind turbine accessories. It is suitable for motors with shaft diameter of 2mm/ 0.078". You need to assemble by yourself, just enjoy the DIY fun. 6.9 inch Plastic Fan Blade 11-Leaves DC power small motor wind turbines accessories, The wind conductivity is very strong. Whether it is used as a fan leaf for electric fans, to output wind power, or for the power conversion of wind power generation, its effect is very good. This Fan Blade is made of PP plastic, scrub the injection molding process, lightweight and durable in use. The leaf surface is made of frosted material with strong flexibility and is not easy to be damaged. Easy to install and use. Easy to remove and convenient to clean, good demonstration effect, it is a very good demonstration tool for DC wind power generation and DIY science education experiment. Great teaching tool to develop children's hands-on ability and develop interests. Good choice for teaching physical DC wind power generation principle. Tips: When used in wind turbines applications, In order to improve the display effect, the turbine need to be powered by the fan or blow dryer on it at just the right angle instead of the natural wind.