Features: This Stirling Engine model demonstrates efficient thermal mechanical energy conversion through alloy construction, ideal for illustrating energy conservation principles in physics education. Featuring stable and rustproof alloy metal frame, this educational tool ensures safe operate during repeated classroom experiments and student led demonstrations. Designed for school physics students and educators, this hands on model enhances understanding of thermodynamic concepts through interactive steam powered experiments. Suitable for classroom demonstrations, laboratory investigations, and STEM club activities, the compact design visually explains energy applications. Its metal components simplify maintenance while emphasizing sustainable energy education, making it ideal for exploring clean power generation concepts. Specifications: Component: Alloy Metal Color: As picture shown Size: Approx. 15x8.8x7cm/5.9x346x2.75in Weight: Approx. 900g 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