2pcs 10*10cm 0/90 Polarized Film Sheet,LCD Polarizer Filters, Polarizing Film Comes with protective peel-off film. Great for doing cool science projects/experiments. Also great in photography setups Available in Various Sheet Sizes for your Customized Use Makes the study of light and color fun and unforgettable. Features slide mounted frames for easy handling during classroom experiments. Ideal for experiments involving birefringance, light scattering and more. Polarizing filters are used for experiments involving birefringence, light scattering, polarized light experiments, light reflection, Brewster's angle and how polarized sunglasses work. Same linear polarized material as our Linear Polarized 3-D glasses Specification: Size: 100mm x 100mm Optical type: High contrast transmissive Transmittance: single(42%) ; crossed(0.005%) Color: neutral gray Polarizing efficiency: 99.99% Polarization axis: 50mm Wavelength: 380~700nm Thickness: 0.13mm Direction: linear Durability: 60C/90%RH/500Hours test passed Adhesive glue: No Protective film:Please remove the protective films before using polarizer