Features: The Air Compression Fire Starter safely demonstrates energy conversion principles, allowing student to visualize mechanical to thermal transformation. Crafted with plastic, this educational apparatus features clear chambers for observing compression processes and heat generation mechanisms. Suit for physics instructors and STEM educators teaching students aged 12-18 about thermodynamics, energy conservation, and mechanical work concepts in classroom laboratories. Widely used for interactive physics demonstration, science project, and curriculum aligned experiment on pressure dynamics and heat transfer principle in secondary education setting. This classroom tested thermodynamics demonstrator withstand repeated educational use while maintaining structural integrity, ensuring visualization of energy conversion processes across academic terms. Specifications: Component: Plastic Color: As Picture Shown Size: Approx. 6x27.6cm/2.36x10.87in Weight: Approx. 100grams Package Includes: 1Piece Air Compression Fire Induction Device 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