Feature: 1. Stirling Engine Motor Model: Glass tube and glass alcohol lamp facilitate direct observation of piston movement. It's a physical experimental model. 2. Anti Slip: There are four anti skid pads at the bottom of stirling engine motor model to ensure smoothing operation. 3. Simple Operation: Use for a long time, add 95% alcohol to the alcohol combustor and light it. Let the lamp burn on the cylinder at one end of the circle for about 60‑120 seconds, then gently push the wheel to work. 4. Excellent Performance: Stirling engine motor model has low noise and low pollution, with beautiful and elegant appearance. 5. Wide Applications: Suitable for children's science projects, physical machine learning, classroom presentation props for teachers, friends, family, parents, children's birthday gifts, etc. Specification: Item Type: Stirling Engine Motor Model Material: Zinc Alloy, Stainless Steel Fuel: 95% Alcohol Color: Gold. Package List: 1 x Stirling Engine Motor Model