【Camera Lens Filter Kit】The product is equipped with 52mm ND + UV filter, aluminum alloy adapter ring and lens protection cover, the frame is made of aluminum, anodized material, durable. The adapter ring can be used with the lens cap when attached to the lens. | 【Quick Installation】The adapter ring can be directly attached to the camera housing and provides internal threads for installing 52mm filters on the front of the camera. After installing the adapter ring, tighten it with a wrench to fix or remove it. | 【HD Optical Glass】The lens is made of high-definition optical glass, with high light transmittance, no chromatic aberration (color shift), hydrophobic, scratch-resistant and oil-resistant. All-round protection for your lens from accidental damage. | 【ND + UV Filter】UV filter blocks UV rays and removes blue tint from photos. The ND filter effectively reduces the reflection and glare of the filter itself, reduces the amount of light entering the camera, prolongs the exposure time, and ensures high-quality images. It is mainly used for landscape photography with slow shutter speed and large aperture portrait photography under bright light. | 【Adjustable ND Filter】 Neutral Density Filter adjustable range from ND2 to ND400, 360-degree rotation adjustment, allowing you to better control the camera's aperture, exposure time and sensor sensitivity settings, and give you the freedom to create your own work by allowing. | 【Lens Protection Cover】High-quality material, dustproof, protect the lens. Compatible with GoPro Hero11 Black / Hero11 Black Mini / HERO10 Black / HERO9 Black. NOTE: Due to different lens types and focal lengths, this filter may experience a dark "X" cross, this is not a quality problem, it can disappear via rotating the filter.