Designed specifically for DJI Action 4 camera, this 49mm adapter ring allows you to easily attach ND, CPL, UV, and other lens filters for enhanced shooting flexibility.Features a quick-snap mechanism for effortless installation and removal while ensuring a stable, wobble-free fit during action-packed filming.Made from durable, lightweight aluminum alloy for long-lasting performance without adding extra bulk to your camera setup.Enables the use of professional-grade filters to reduce glare (CPL), control light exposure (ND), or protect your lens (UV), improving video and photo quality in various conditions. Perfect for vloggers, adventurers, and filmmakers who want to expand their Action 4's creative potential with interchangeable filters.