.100% brand new and high quality .Except the base is made of wood, the whole product is made of all-metal material, polished and polished, perfect for high-end texture, and it is a beautiful art. .The product can be used without receiving excessive debugging. .The key parts are commonly used brass + fine coating materials, which are not worn for a long time and have a service life of more than 10 years; .After the product is received, it does not need to be debugged. It can be ignited by alcohol, and the boiler can be used with water. It is safe and pollution-free. .The main parameters of the product: Power cylinder inner diameter 16mm, piston stroke 16mm, piston diameter 16mm, flywheel diameter 54mm, pulley diameter 24mm, the power generation voltage is 4-9v, which can drive the matching colorful LEDs and combine them into a pleasing operation effect. .The product has 16mm 4 cylinder power, the dual engine drives the generator output, the generator has the power output interface, and the product has an additional set of the motor with external wiring, which can be used together. .The products are very suitable for model lovers DIY, laboratory teaching aids, children's puzzle play, gift-giving friends and other purposes. .Because the product has a high temperature during operation, the child needs to be under adult supervision. .Note: In order to avoid transportation damage, quartz glass parts are packaged in the form of parts package. They are not directly installed. You need to do the simple installation before running according to the picture. The installation method is very simple. The installation can be completed with reference to the shopping main diagram