LED Air Stirling Engine Funny Education Electricity Power Generator Model

Features: The vacuum engine uses the inertia of the flywheel to drive the piston, thereby reducing the pressure in the cylinder. Use an alcohol cotton stick and rotate the flywheel until the machine turns. No water is needed. High quality materials, combined with exquisite durability. This model can clearly show the trajectory of valve and piston, and help students understand the internal combustion engine and external combustion engine. The ideal educational model of demonstration education and research. Specifications: Material: Wood + Metal Package Weight: 406g 14.3oz Package List: 1 Bottle * Engine Model 3* wrench 1 * hose * 1 + 1 * alcohol burner 1 * English Instructions