Features: Experience the durability and educational fun of this all metal Stirling Engine Model, designed for hands on assembly to deepen understanding of mechanical principles and thermodynamics. Crafted from metal, this assembly Stirling engine car model features precisely parts that demonstrate the conversion of thermal energy to mechanical motion without batteries, ensuring smoothly and safe operating. Ideal for students, hobbyists, and educators in physics or mechanical engineering, offering hands on learning tool for schools and universities. Perfect for classroom demonstrations and physics lab activities, this physics teaching aid enhances thermodynamics lessons by visually showing energy transformation. This Educational assembly Stirling Engine Car Model provides sustainable and engaging way to explore green energy concepts in educational settings. Specifications: Component: Alloy Metal Color: As picture shown Size: Approx. 18x12.5x11cm/7.08x4.92x4.33in Weight: Approx. 750g Package Includes: 1Piece Stirling Engine Model note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color