Experience Fascinating Optics and Science With our high quality 4pcs K9 crystal optical prisms, witness the breathtaking phenomenon of light refraction. Splitting the light into perfect angles, creating striking and vivid rainbows or halo effects. A fun, exciting and educational way to learn about physics, this prism is a perfect scientific tool.Capture Unique Photo Effects Elevate your photography skills with our clear glass prism. Impressively useful for photographers, it adds a stunning glow of rainbow light to your images, without the need for editing, enhancing the visual enjoyment of your images.Designed for safe and interactive learning With rounded edges, our prism is noticeably safe to handle, especially when used by young students. It is an exceptional tool for learning about the nature of light and how rainbows are created, making science education fun and engaging., Portable and GiftReady Our 50mm prisms 4 pack are comfortable to carry, perfect for photography on the go or travel adventures.Color transparentMaterial crystalSize Approximately 30303050mmPackage contents4Clear triangular prismOnly the above package contents, other products are not included.Note Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is13 cm.