1Easy to Assemble: Stirling engine motor model is simple to assemble, collectible, can be used as an ornament, but also as a school experiment supplies 2Low Temperature Principle: thermal energy is converted into mechanical energy of the engine, is suitable for hands on operation, more intuitive grasp of the machine low temperature working principle 3Stainless Steel Plate: Stirling engine model uses brushed stainless steel base plate, which is exquisite and beautiful, not easy to rust and corrosion 4Overall Structure: Educational stirling engine model has a scientific design of the overall structure to ensure the integrity and stability of the system 5Scope of Application: Stirling engine toy kit is suitable for children's science project gifts, physical machine learning, classroom demonstration props for teachers, etc Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.