Full metal four stroke combustion engine model designed to demonstrate the mechanism and working principle of a single cylinder four stroke gasoline engine. Suitable as an educational replica for both diesel and gasoline engine concepts. Key benefits Makes engine operation easy to understand by showing moving parts and the four stroke cycle: intake, compression, power, and exhaust. Durable full metal construction provides realistic feel and longlasting use for repeated classroom or lab demonstrations. Compact, portable size fits classroom tables and lab benches while remaining large enough for clear observation of internal motion. Main features Function: Working demonstration model of a four stroke single cylinder gasoline engine that illustrates valve motion, piston travel, crankshaft rotation, and connecting rod action. Material: Predominantly full metal construction for realistic weight and mechanical durability. Size: 16 x 13 x 29 cm (6.29 x 5.11 x 11.41 inch), sized for desktop demonstrations and handson exploration. Visibility: Exposed components and clear mechanical linkages allow students and hobbyists to observe cause and effect in real time. Educational focus: Designed as a teaching aid to support physics, engineering, and vocational lessons about internal combustion engines. Practical applications Classroom demonstration: Use during lessons on thermodynamics and mechanics to show how the four stroke cycle produces mechanical work. Laboratory experiment aid: Integrate into lab activities to compare theoretical cycle descriptions with visible mechanical movement. Hobbyist and model study: Add to a collection or use as a reference tool for learners studying engine design and mechanical systems. Why customers choose this model Clear, handson visualization of engine principles improves comprehension compared to diagrams alone. Robust metal construction withstands repeated demonstrations in educational settings. Portable dimensions and straightforward presentation make it easy to include in lessons, workshops, and study. What to expect A full metal single cylinder four stroke demonstration engine that operates as a mechanical model to illustrate core engine concepts. Suitable for teachers, students, hobbyists, and anyone seeking a tangible way to learn how four stroke internal combustion engines work.