Realistic V8 Engine Model: This V8 engine model is exquisitely designed and unique, containing many realistic details such as a transparent cylinder head, simulated piston movement, and turbocharger. It is a great mini engine model toy with a compact design that simulates the inner workings of a real V8 engine. USB Charging Motor Design: This V8 engine kit includes a motor (no battery required) and a USB charging cable, allowing the model toy to be electrically driven. You can observe the movement of the internal pistons through the transparent cylinder heads on both sides and gain an understanding of how a V8 engine powers a car. Safe High-Quality Material: The V8 engine kit is made of ABS material, which is non-toxic and odor-free. It has been tested to ensure a safe and enjoyable building experience. If you have any questions, feel free to contact us for the best service. Practical STEM Educational Toys: These MOC engine toys provide hours of building fun, sparking interest in mechanics and engineering while enhancing creativity, logical thinking, and problem-solving skills. They are perfect STEM projects for families to build and play with kids. Great Gift for Adults & Kids: Designed for car and mechanical engineering enthusiasts, this V8 engine model is suitable for adults or kids aged 8 and up. Its practicality and collectibility make it an ideal gift for special occasions such as Christmas, birthdays, Children's Day, and STEM educational events.