Features: A great idea to add some for creative effects to photos, movies or videos. For example, rainbow colors, fantastic looks, beautiful reflections or flares, you don'for t even need to use for Photoshop. It can be mounted on a stand or tripod to accurately position the prism or placed in front of the lens to release your hand when taking a photo. Show your kids a rainbow, or use our prism for photography to create unique pictures. Material: Lead free K9 optic glass, not plastic. Use this equilateral prism to split a beam of light into its spectral components (the colors of the rainbow). Specifications: Material: K9 Optical Glass Size: 150mm/ 5.9 in 1/4 inch Threaded Hole Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Triangular Prism 1x Stand