Enhance your DIY aircraft projects with these model airplane propellers. Designed for educational purposes, they are practical for classroom activities and science fairs. The durable, fold-resistant material ensures they can handle repeated use, making them a choice for students and hobbyists looking to explore the principles of flight. Features - Color: Red -Material:Plastic - Size: 12.50X3.00X2.00cm/4.91X1.18X0.79in -Optimized for stability: these precisioncrafted propellers reduce vibrations during flight, ensuring smoother operation and better control for model aircraft enthusiasts -Educational value: designed for science classes and diy projects, this kit inspires creativity and fosters a deeper understanding of air principles among students -Foldresistant design: the durable construction prevents bending or breaking, making these propellers reliable for extended use in various flying conditions -Supports team collaboration: practical for group projects, this set encourages teamwork and innovation, making it ideal for classroom or club activities -Universal fit: compatible with multiple airplane models, these propellers provide versatility for both novice builders and experienced hobbyists Package list: 30 x (hole diameter 6x4mm) 30 x