Product DescriptionThis 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 thechildren’s interest of understanding the magic world.Details:Great prism for teachingCan be also a toy for kidsMade of high quality optical glassSide Length: Approx. 30mmPrism Length: Approx. 50mmPackage Included:1 x Prism