1Pcs Six-Sided X-Cube Bright Light Cube Stained Glass Prism Beam Splitting Prism Optical Experiment Instrument Optical Lens

Specifications:Material: GlassSize: about 12.7*12.7*12.7mm/20*20*20mmUses: used as teaching or research tool or used for decorationPackage included:1 X CubeNotes:1. Manual measuring, please allow 1 ~ 3mm error,thank you.2. Due to the difference...