Item Type: Triangular Prism Material: Optical Glass Size: Approx. 3 x 13cm/1.2 x 5.1in Package List 1 x Triangular Prism 1 x Grip Please allow some errors due to manual measurement. 1Colorful: Use this equilateral prism to split the beam into its spectrum components (the colors of the rainbow). Show your child the rainbow, or use our prism for photography to create unique photos. 2Photo Tool: This optical glass triangular prism, explore optics with your family and friends, can also be used as an auxiliary tool for taking photos, with built in 1/4 screw hole, it can be installed in tripod, light stand, arm or other accessories. 3With Mini Grip: The triangular prism comes with a mini grip for easy fixing of the triangular optical prism and changing the angle of the glass prism, allowing professional photographers to create unique images. 4Triangular Prism: Physics teaching prism provides perfect clarity and transparency that fully covers the lens and fits easily in your camera bag. Create light leaks, halos, reflections, and many image effects. 5Application: Triangular prism is a great tool for teaching refraction and science education in physics classes. It can also be used for artistic photo effects, wedding and birthday parties, and some other outdoor events.