Glass Prism Diy Reflection Prisms Equilateral Prism, 50 X 50 Mm Brand: Scifa Color: WHITE Part Number: Scifa-GP-BN50 Details: Optical glass prism diy reflection prisms equilateral prism 50 mm x 50mm size, product description, description , this kind of optical glass prism can reflect seven-color sunlight .it can 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. size : 50x50x50x50 mm package included:1*optical glass prism.