* 【Original Design-Super-Diameter & Ultra-Slim】K&F Concept Pro Square Filter System won the iF DESIGN AWARD and Red Dot Design Award. Unique Square Filter Frame with 95MM CPL, holder thickness 12mm, easy to take, no light leakage. Effectively reduce the chance of vignetting when using an ultra-wide-angle lens. The ultra-slim frame and a large diameter ensure no vignetting on a wide-angle lens and rear CPL design for convenient installation and removal. * 【CPL Filters Function】Allow you to remove reflections from non-metallic surfaces, such as water and glasses, also in color and contrast enhancement, especially for the blue sky and white clouds. * 【HD Optical Glass with Multi-coating】CPL filter use imported optical glass, 28-layer nano-coating technology; double-sided polishing process, showing high-definition picture quality, waterproof, anti-scratch and anti-greasy. * 【Multi-functional Square filter system】The square filter kit can be equipped with 2 square filters, one round filter, four adapters 67, 72, 77, 82mm included. * 【Kit Includes】Filter holder + 95mm CPL filter +4 * adapter rings(67mm/72mm/77mm/82mm).