Ideal for classroom settings, these large propellers are ideal for science projects and hands-on learning activities. They allow students to build and understand the principles of flight through practical experimentation. The propellers are easy to assemble and integrate into various model , making them a versatile addition to any educational toolkit. Features -Color:Orange -Material:Plastic -Size:18.00X3.00X2.50cm/7.07X1.18X0.98in -Stem education: supports stem education by providing practical experience in building and understanding model airplanes -Imagination boost: the diy nature of the kit stimulates children's imagination and encourages them to -Comprehensive kit: contains enough components to complete several projects, making it a comprehensive kit for young builders -Adaptable propellers: the large propellers can be adapted to fit various types of model airplanes, enhancing their usability -Robust construction: made from sturdy plastic, these parts are designed to last, ensuring they can be used repeatedly Package list: 5 x (hole diameter 6x4mm) 5 x tail hooks