Feature: 1. Enhanced Image Clarity: The multi layer coating on the square ND filter boosts light transmission and reduces reflectivity, offering clearer image quality while protecting the camera lens from potential damage. 2. Seamless Compatibility: Fits snugly into 4x5.65 inch filter frames or matte boxes, featuring a built in filter loading system that significantly reduces post production work. 3. Optical Glass Material: Crafted from optical glass with excellent flatness and transmittance, using advanced double sided multi layer coating to achieve effective gradual dimming and superior image quality. 4. Easy Maintenance And Durability: With dual water resistant and dirt resistant coatings, this neutral density filter is easy to clean, dust proof, and scratch resistant, leaving no traces after cleaning and ensuring enduring performance. 5. Versatile Mounting: Unlike traditional circular filters, the square ND filter is usually mounted on a matte box or filter frame, allowing for compatibility with larger lenses and offering greater flexibility. Specification: Item Type: Square ND Filter Material: Optical Glass Product Size: Approx. 10.16x14.35cm/4x5.65in. Package List: 1 x Square ND Filter 1 x Storage Box