UNPARALLELED QUALITY: The prism set is designed with premium K9 optical spectrum glass, not your average plastic. It assures superior refraction effects and crystal-clear reflections. with a thick optical photography prism glass, our prisms split of light to create impressive rainbows highlighting its different components. EDUCATIONAL & FUN: Safe with rounded edges, our prism set functions as a critical tool for educating children about light nature and rainbow formation. It provides a fun, interactive way for kids to learn and understand science better, stimulating their interest and curiosity. EXCELLENT VERSATILITY: perfectly designed for a variety of uses, the prisms can show a rainbow for kids, create photos with photography, or even be deployed for art photography effects. They can as aesthetic elements in weddings, birthday parties, and other outdoor events, contributing a touch. & PORTABLE: The prisms come in two models, a 6 inch and a 1 inch, catering to all your needs and applications. Portable and easy to carry around, they make for perfect gifts and friends. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Colour:Transparent Material:K9 glass Size:150x30mm, 25x25x25mm Package Contents: 2 * Drip Irrigation Pressure Regulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.