Notice: Before buying, please pay attention to; distinguish the models included in the suit: ND 3 IN 1: ND8 ND16 ND32 4IN 1: ND8 ND16 ND32 CPL ND 4 IN 1: ND8 ND16 ND32 ND64 Feature: 1. The edge of the mirror frame adopts a knurled design. in diamond, which makes it comfortable to wear. grip and does not slip when loading and unloading the lens 2. The frame is equipped with of built-in rubber rings, effectively isolating water droplets and vapor, allowing you to create worry-free environments such as underwater, rainy, humid and low temperatures. br>3. Quality optical glass imaging, fairly clear and hard, quality glass DSLR, ensuring quality high-definition image quality, durable and scratch-resistant, while being waterproof and scratch-resistant. oil 4. The double-sided multi-layer coating reduces the reflection of light between the lenses, resulting in a clearer image and better quality. picture 5. The aluminum alloy frame is reliable and durable, with engraved text. non-fading and non-fading laser. 6. The overall size is compatible with the official protective mirror, and it can fit the official accessories perfectly without worrying about the compatibility. with other accessories