1、Square ND Filter: 4x5.65in filter enables more control over shutter speed and aperture, avoiding overexposure and helping to balance image exposure, ideal for shooting in bright sunlight, creating motion blur. Ideal for professional photography and videography. 2、HD Optical Glass: 4x5.65in ND filter is made of HD optical glass to provide superior image quality. No color cast, no color balance affected, ideal for video recording and clear images. 3、Double Sided Multi Layers Coatings: The multiple layers of coatings on both sides make the filter scratch resistant, water resistant, oil proof and easy to clean. It minimizes glare and dark corners for improved contrast and details 4、Super Slim and Lightweight: This ultra slim and lightweight filter, barely noticeable weight to your filming setup when mounted on. Store it in the carrying case for storage or for when in use on the go. 5、Enhanced Compatibility: Unlike traditional circular filters, square ND filter is is designed to be mounted on matte box or filter frames, providing compatibility with various lens sizes. Item Type: Square ND Filter Material: Optical Glass Product Size: Approx. 10.2x14.4cm / 4.0x5.65in 1 x Square ND Filter 1 x Storage Box