Suit for DIY enthusiasts and educators, these propeller parts are designed to support creative projects and scientific exploration. Their versatile design allows for compatibility with multiple model aircraft types. Enhance your understanding of wind force and propulsion mechanics while enjoying the thrill of building and flying your own model planes. Features -Color:Blue -Material:ABS -Size:18.00X3.50X2.50cm/7.07X1.38X0.98in -Enhanced rubber : the rubber band power system ensures stable flight and extended gliding time, suit for hobbyists and educational purposes -Airplane glider optimization: designed compatible for thunderbird gliders, these parts enhance aerodynamic performance, achieving greater flight distances -helicopter propeller upgrade: the propellers provide increased power output, ensuring in demanding flight conditions - fan : the efficient fan design reduces drag, improving flight speed and energy efficiency for competitive flying -Adaptable airplane accessories: these parts are compatible with a wide range of model airplanes, offering easy installation and enhanced functionality Package list: 10 x Model Airplane Propellers