Features: 1Stirling Engine Motor Model: Glass tube and glass alcohol lamp facilitate direct observation of piston movement. It's a physical experimental model. 2Anti Slip: There are four anti skid pads at the bottom of stirling engine motor model to ensure smoothing operation. 3Simple 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. 4Excellent Performance: Stirling engine motor model has low noise and low pollution, with beautiful and elegant appearance. 5Wide Applications: Suitable for children's science projects, physical machine learning, classroom presentation props for teachers, friends, family, parents, children's birthday gifts, etc. Item Type: Stirling Engine Motor Model Material: Zinc Alloy, Stainless Steel Fuel: 95% Alcohol Color: Gold Package Included: 1 x Stirling&nbspEngine&nbspMotor&nbspModel