Activity & Learning Toys

DIY Electric Rotary Engine Model Kit, High-Speed Simulation Dynamic Engine Up To 600 RPM, Ideal for STEM Education, Tech Hobbyists, and Adult Learners Pistonless rotary 4-stroke internal combustion engine model kit, featuring highly textured metal parts, offers an immersive introduction to mechanical engineering. Perfect for enthusiasts eager to build their own engine. Enhance your building... DIY Electric Rotary Engine Model Kit, High-Speed Simulation Dynamic Engine Up To 600 RPM, Ideal for STEM Education, Tech Hobbyists, and Adult Learners