1Multi Purpose: Stirling engine model kit has a wide range of applications, such as children's science projects, holiday gifts, physical machine learning tools, teacher demonstration props in the classroom, etc. 2Smoother Operation: There are 4 anti skid pads on the bottom of stirling scientific physical model to ensure smoother operation with low noise, low pollution and low running cost. 3Simple to Operate: Stirling scientific physical model is durable, fill the inflamer with 95% alcohol and light it. Let the light burn on the cylinder at the rounded end for about 60 to 120s, push the wheel lightly and it will work. 4Strong Practicability: Stirling engine motor model is a model for physical experiments, glass tubes and glass alcohol lamps are convenient for direct observation of piston movement. 5Practical Gifts: The stirling engine model is a well designed mechanical toy that nicely demonstrates the fundamentals of an external combustion engine and makes a great gift for family and friends.