Feature: 1. Stirling Engine Motor Model: Powered by a Stirling engine model, the toy has a lot of fun with a variety of ways to play. 2. Exquisite Beautiful: Using fine workmanship, the appearance is exquisite and beautiful, with both beauty and texture. 3. Wide Applications: Wide range of applications, suitable for children's science projects, physical machine learning, teacher demonstration props, etc. 4. Fine Polishing: With fine and exquisite polishing, the color is bright, not easy to rust and discolor. 5. Educational Toy: By operating the engine, children will observe and understand the operation process, and have a more intuitive understanding of how Stirling engines work, thus deepening their interest in physics. Specification: Item Type: Stirling Engine Motor Model Material: Zinc Alloy Purpose: Through Manual Operation, You Can Observe the Entire Operation Process of the Stirling Engine, Understand the Stirling Principle More Intuitively, and Broaden the Interest in Learning Physics. Package List: 1 x Stirling Engine Motor Model1 x Magnet1 x Rubber Band1 x Alcohol Lamp with Lid1 x Alcohol Cotton