Features: Wind power model kits, puzzle science and technology to teach and enjoy. Handmade physics experiment educational toy can improve kids hand eye cooperation, intelligence development, hands and brains ability. Science experiment kits to make toy can cause children's curiosity, become the parents of the education of children's helpers. Learning more about science technology and physics experiments by our scientific model kits. Perfect for classrooms, school programs, libraries, birthdays, and stem-loving families, and collaborative learning. Specifications: Component: Plastic, Metal Size: As the Picture Show Package Includes: 1 Set Wind Power Model Kits(without batteries) note: Please allow 1-3cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.