Feature: 1. Stirling Engine Motor Model: Physical experimental model, glass tube and glass alcohol lamp facilitate direct observation of piston movement. 2. Anti Slip: There are 4 anti slip pads at the bottom of the model to ensure smoothing operation. 3. Simple Operation: Easy to operate, add 95% alcohol to the alcohol combustor and ignite. Let the lamp burn on a cylinder at one end of the circle for about 60‑120 seconds, and then gently push the wheel to make it work. 4. Excellent Performance: Stirling engine motor model has a beautiful and elegant appearance, low noise and low pollution. 5. Wide Applications: Wide range of applications, can be used as children's science project gifts, physical machine learning, teacher classroom demonstration props, etc. Specification: Item Type: Stirling Engine Motor Model Material: Zinc Alloy, Stainless Steel, Glass Output Voltage: 3.0-5.0v Fuel: 95% Alcohol. Package List: 1 x Stirling Engine Motor Model1 x Alcohol Bottle1 x Spare Heated Glass Tube1 x Bulb1 x Alcohol Rope2 x LED Light String3 x Rubber Rings