Specifications:Children can learn physics by playing with this triangular prism.Made of premium material, it is durable and without any subtle defects.Make a Rainbow by refraction easily and can also be used for some cool photography effects.You can conduct cool science experiments at home to explain to children how rainbows are formed.The prism with bracket is suitable for physics experiment and children& 39;s extracurricular science activities.Item Name: Triangular PrismMaterial: Glass, ABS PlasticFeatures: with Bracket, Triangular Prism, Durable, Rainbow Color Light, Teaching AidsSize: 16cm x 12cm x 7.5cm/6.3" x 4.72" x 2.95" (Approx.)Prism Width: 2.4cm/0.94" (Approx.)Prism Length: 9cm/3.54" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Triangular Prism