Features: Triangular is crafted from glass, promising durability as well as excellent light refraction properties for numerous uses. the fascinating world of light manipulation with our crystal glass. These rainbow serve as great supplies for science experiments and classroom study, suitable for demonstrating the principles of light refraction and dispersion. Their suitable size allows for easy handling, making great for education purposes. for students, educators, and enthusiasts interested in physics and optics. Specifications: : Glass Size: As the Picture Shows Type: 3 Kinds Optional Note: Please allow 1-3cm errors due to manual measurement. Due to difference betweeen different monitors,the picture may not reflect the actual color of the item. Package includes: 1 Pc Triangular Triangular is crafted from glass, promising durability as well as excellent light refraction properties for numerous uses. the fascinating world of light manipulation with our crystal glass. These rainbow serve as great supplies for science experiments and classroom study, suitable for demonstrating the principles of light refraction and dispersion. Their suitable size allows for easy handling, making great for education purposes. for students, educators, and enthusiasts interested in physics and optics.