Features: Play with science: The vortex engine model is made with a high-precision process that demonstrates the principles of aerodynamics and the vortex effect, allowing children to learn the wonders of science while playing. Environmentally friendly materials: The use of environmentally friendly PLA and metal materials, non-toxic and odorless, drop and wear-resistant, ensures the durability of the model, and ensures safety during use. Collection value: Exquisite model, fine details, not only educational toys, but also exquisite handicrafts, with a certain collection and display value. Suitable for: Whether as a popular science educational toy for children, or as a collector's collection for model lovers for teenagers and adults, this vortex engine model is an ideal choice. Perfect for any occasion, it will delight anyone who appreciates the art and science of flight. Specifications: Material: PLA+Metal Color: As picture Size: 35*18cm Package contains: 1pc Turbofan Engine Model Note: 1. Please note that the photo does not show actual size, please refer to Description for size details. 2. Please allow differences due to manual measurement, thanks. 3. Due to the difference between different monitors, the image may not reflect the actual color of the item.