These model airplane propellers are ideal for hands-on STEM activities, providing students with a practical understanding of aerodynamics. The fold-resistant design ensures durability, making them practical for repeated classroom use. Whether for a school project or a personal hobby, these propellers help bring your model airplanes to life with reliable performance. Features - Color: Red -Material:Plastic - Size: 12.50X3.00X2.00cm/4.91X1.18X0.79in -Lightweight and durable: these propellers are made from lightweight yet sturdy materials, enhancing flight efficiency while ensuring longterm durability for model airplanes -Hands learning tool: ideal for stem education, this kit promotes hands exploration of air mechanics, helping students develop technical and creative skills -Precision manufacturing: each propeller is meticulously crafted to ensure balance and accuracy, reducing flight disruptions and improving overall performance -Adaptable for various models: designed to fit a wide range of model airplanes, this set offers flexibility for different projects and user preferences -Encourages creativity and teamwork: practical for group activities, this kit supports collaborative learning and innovative problemsolving among participants Package list: 50 x (hole diameter 6x4mm) 50 x