Description: Comprehensive Set: Physical Light Reflection and Refraction Model includes six different types of prisms, square, semicircular, triangular, biconvex, biconcave, and plano convex. It is designed to meet a variety of experimental requirements and provide a deeper understanding of light propagationMaterial: Physical Light Reflection and Refraction Science Kits is made of acrylic with a smooth surface and standard shape. They are suitable for students and teachers to demonstrate optical experimentsSize: Physics Optics Experiment Set Experiment's packaging size is 22.5cmx10cm, which is compact enough for easy storage, but large enough to be comfortably operated during experimentsPackage Included: Each package comes with a complete Light Reflection and Refraction Science Experiment Set, providing all the necessary tools needed to conduct variety of optical experimentsGift: Teaching Aid is an ideal gift for children Size Chart: 22.5cmx10cm/8.86inchx3.94inch(package) Package Includes: 1 Physics Optics Experiment Set