This optical glass triangular prism is designed for educational purposes, making it an ideal tool for teaching light and physics concepts. Its sturdy glass construction ensures clear and precise light refraction, creating vivid rainbows and color . great for classroom demonstrations and hands-on learning experiences. Features -Color:Assorted Color -Material:Glass+Plastic -Size:16.50X12.00X7.50cm/6.48X4.72X2.95in -Clear effect: provides a clear dispersion effect, helping children understand optical principles and fostering scientific interest and observational skills. -Large design: the large size is suitable for children, easy to hold, safe, and reliable. -Curiosity solution: satisfies children's curiosity about optical knowledge, allowing them to learn while playing and improving learning outcomes. -Versatile use: suitable for laboratories, schools, homes, and more, great for teaching, scientific experiments, and observation. -hardwearing material: made of hardwearing optical glass, ensuring clear dispersion effects, durability, and longterm use Package list: 1 x Right angle prism