Libima 40 Pcs Plastic Propeller for STEM Activities Fold Resistant Propeller Blades with Rubber Band Hooks for Airplanes and Helicopters from Research Institution, 7.1 Inches (Black)

About this item

• Large quantity: our package includes 40 small plastic propellers and 40 rubber band hooks, making it easy to experiment with different designs and projects for adults from research institution, enough for your daily using needs
• Ideal for Projects: our plastic propeller for stem projects are suitable for a wide range of STEM projects, including rubber band powered helicopters, propeller planes, and propeller powered cars
• Quality Material: our rubber band propeller is made of thermoplastic polymer structural ABS and quality steel, with good heat resistance and high tenacity, ensuring safety and reliability for long term use
• Suitable Size: with a whole length of 7.1 inches/ 18cm, 4 x 6 mm socket, and the depth of socket is 12 mm; Please carefully match the specifications you need; It fits closely onto a craft stick or wood, making it easy for people to put together
• Nice Gift: our airplane propeller makes a suitable and interesting gift for STEM enthusiasts, providing endless hours of entertainment and learning