Features: This optical phenomena experiment set visually demonstrates light propagation, reflection, and refraction phenomena, helping students better understand optical physics principles, physics teaching aid. Made from plastic for long term durability during frequent use while eliminating safety hazard associated with glass lenses, science experiment set. Easy and quick setup, saving classroom time and improving teaching efficiency, making it ideal for physics teachers, educational demonstration set. Suitable for school physics labs and home education, serving as hands on learning tool to explore optical mysteries with children, stimulating scientific interest. Allows direct observation of light behavior through practical operate, solving abstract concept comprehension challenges in traditional teaching methods, optics demonstration set. Specifications: Component: Plastic Color: As picture shwon Size: Mixed Size Weight: Approx. 600g Package Includes: 1Set Light Reflection And Refraction Demonstrator 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