FOTGA 4mm ND8（0.9）3-stop Lens Filter 4×5.65in ND Filters Optical Glass Waterproof Scratch-resistant with Multi-Resistant Coating Features: 【Exceptional Craftsmanship】Made from top-quality optical glass, our filters offer the opportunity for longer exposure times, allowing you to capture the captivating essence of time and movement. 【Elegant and Lightweight】Designed to be ultra-slim and featherweight, measuring only 4 * 5.65 inches and a mere 4mm thick, these filters minimize any impact on the transmission of light and effectively eliminate vignetting. 【Cutting-Edge MRC Coating】Equipped with state-of-the-art multi-resistant coating technology, our filters feature a specialized coating that effectively reduces surface reflections and ghosting. This advanced coating also offers outstanding resistance against scratches, water, oil, and dust, ensuring long-lasting durability and preserving the impeccable quality of your images. 【Versatile conservation】The ND filter offers dependable safeguarding against water, scratches, and oil, guaranteeing enduring resilience. 【Multiple Layers of Coating】The camera lens filter showcases a multi-layered coating. Utilizing cutting-edge coating technology, the filter generates authentic neutral images, unaltered by infrared pollution. Specifications: Brand: FOTGA Material: Optical Glass THK: 4mm Item Size: 102 * 144mm/ 4 * 5.65in Model: ND4/ ND8/ ND64/ ND1000(optional) Packing List: 1 * ND Filter 1 * Storage Box