PATIKIL Polarized Film Sheets Adhesive Polarizer Linear Polarizing Filter for Screen Photography Lighting 7 Inchx7 Inch/18cmx18cm

Material: Composite; Thickness: 0.3mm; Dimension: 180mmx180mm

The material is about 1mm with protective backing sheets on both sides.

Simple and convenient to use, clean the dust and adjust the angle; Then cut it into the desired shape and stick it on.

Polarizing material is on one side of a plastic substrate that scrambles polarization; You need to choose which direction the light passes through depending on your use; a) light through polarizing side first, to analyze polarization from an object; b) light through substrate first, to create polarized light to illuminate an object.

Remember to take off the protective film from both sides before using it.