Diy Propeller Engines Toy By House of Quirk Do it yourself Educational Toys Games Science Kit Rubber Band Power Yacht Racer Rubber Band Powered Propeller Engines This fun adorable, educational eco-friendly toy kit inspires the children and their families to learn about the new form of clean green energy. They will also learn to use different models Propeller Yacht Propeller Racer powered by rubber band. Children can experience the joy achievement with the assembly. Which can help them to their innovation intelligence. Easy to Assemble No Batteries Required to run the toys. Motivates the Children to learn the concept of clean green Energy Safe, Educational eco-friendly Most Suitable for school projects 24 cms long when assembled 31 cms Tall when assembled Make 2 different models Propeller Yacht Propeller Racer powered by rubber band Experience the power generated by these simple but unusual engines. While most of every day turbine engines use fuel as p House of Quirk Diy Propeller Engines Toy Do it yourself Educational Toys Games Science Kit Rubber Band Power Yacht Racer Learn how Potential Energy and Kinetic Energy interact together to produce thrust to power a sail-boat or a racer car. This DIY kit will keep budding young engineers enthralled.