Features: Gel filter kits are used to vary lighting effects and color correction, with different colors absorbing and filtering different wavelengths of light. Made of high-quality high-transmittance material, with stable color temperature and low loss, it provides you with good color saturation. Helps to improve the color balance of images and is easy to use. for most flashes on the market, such as for Canon, Minolta, for Olympus, for Panasonic, Pentax, for Sony, Yongnuo and more. Widely used in film, stage, theater or photo shooting etc. Specifications: Material: ABS Type: 8 Color/11 Colors(optional) Single Size: Approx. 30x30 for cm/11.8x11.8 inch Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 8Pcs/11Pcs Flash Speedlite Gel Filters(2 Choices Optional)