This triple prism is made from high quality optical glass, the glass part can be removed for single use Can reflect the rainbow light under the sunlight Comes with durable plastic stand, can adjust the prism angle freely Essential equipment for nature science studying in kindergarten and primary school, and light dispersion / refractor researching in high school Ideal for school classes teaching tool or as intellectual development toy for child Material: Glass, plastic Prism Size: 8 x 2.5 x 2.5cm/3.15"x0.98"X0.98" Bottom diameter: Approx 10cm/ 3.94" Top stand width: Approx 12cm / 4.72" Quantity: 1 pc 　 NOTE: Please allow 1-2mm differs due to manual measurement, thanks. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you! Package includes: 1 x NEW Optical Glass Triple Triangular Prism with Stand Physics Light Spectrum