Product Description Premium Material: These color filters are made of high-transmittance plastic and can be used as flash filters. Lightweight, highly durable, color temperature stable, and low loss. Ideal for installation on outdoor lighting fixtures or for converting ordinary LED garage floodlights into Christmas lights, Halloween lights, etc. Quantity: 9 color filters in total, enough for most needs. Dimensions: 11.7 x 8.3 inches / 29.7 x 21 cm (L x W). Caution: Do not place the product near onlit lights, as it may melt. Combined Use for Stunning Effects: These color filters can be combined to create different effects, such as cool light effects, color correction, etc. Color correction involves additive and subtractive color mixing, color transmission, absorption and filtering of different wavelengths of light. Wide Applications: These filters are ideal for use in studio flashes, LED lights, film, video, theater, party, and DJ lighting. Or for creating commemorative albums and other art projects. It can also help children reduce frustration while reading and improve reading clarity and eye movement control. Double-sided protective film: Both sides of the corrective filter have a protective film that is easy to remove. Please remove the protective film before use. Don't worry about scratches, it's easy to remove. Colors: Multiple colors Material: Plastic Package Contents: 9 x Corrective Filters This package only includes the above contents and does not include other products. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. The measurement tolerance is +/- 1-3 cm.