Selens 2-Piece Non-Stick Polarized Film Sheets With Polarizing, Point 8 Inches. ?Free Spin?Rotating the polarizing film on demand and bringing an excellent polarization effect. ?Robust Packaging?2*polarized film, 1*squeegee, and 4*wipes. Packing with an anti-folding courier package. ?Teaching?Non-adhesive polarized film sheets do not leave fingerprints and can be reused. Suitable for teaching physics and reducing glare in photography. ?Experiment?Polarizer filter allow you to perform experiments. Such as experiments related to birefringence, light scattering, polarized light experiments, and light reflection. ?Cutting Free?7.8x11.8 inches (20x30 cm) polarizing film, thickness 0.16mm, have protection film, cutting free.Tips: You need to tear off the protective film before use, Otherwise, the use of the effect is not good! ?High quality?Made of plastic material with high-temperature resistance, the polarized filter has a high polarization rate of 99.99% and a high transmittance of non-polarized light, providing a clear display.