Triangular prisms are used to disperse light that is to break light up into its spectral components (the colors of the rainbow); It can be used to teach children to explore the mysteries of light stimulate a child's thirst for knowledge and improve the children's interest of understanding the scientific world. Model N/A Quantity 1 piece(s) per pack Color White Material Optical glass Specification This kind of optical glass prism can reflect seven-color sunlight; It can be used to teach children to explore the mysteries of light stimulate a child's thirst for knowledge and improve the children's interest of understanding the magic world; Great prism for teaching; Can be also a toy for kids Packing List 1 x Triangular prism 1 x Case