Product Title:Prism Six-Sided Bright Light Combine Cube Prism Stained Glass Beam Splitting Prism Optical Experiment Instrument Ns2. Features: 1.With beautiful and unique design there will be completely different color rendering from different angles at the same environment. 2.Uses: used as teaching or research tool or used for decoration. Origin:CN(Origin) Material: glass Size: about 12.7*12.7*12.7mm/0.5*0.5*0.5in Options can choose: 1PC/2PCS. Note: 1.This product is a craft that can only be used in optical experiments and science recognition. It cannot be used in projectors and cameras. 2. The product size approx. 12.7*12.7*12.7mm product small. Due to different measurement methods, please allow a measurement error of 2-3cm. Due to the problem of shooting tools and light, please allow the color difference between the picture and the product.