Feature:1. Compatibility: Specifically designed for Action4, this filter adapter ring allows your camera to be compatible with 49mm round filters, eliminating the need for multiple filters.2. Unlock Your Creativity: With the ability to support multiple filter stacking, this filter adapter expands the imaginative possibilities for your photography endeavors.3. Secure Safety: Equipped with non slip rubber pads and snap on fastening, the adapter features protective rubber pads between the adapter and camera lens to prevent scratches.4. Enhanced Durability: The sturdy frame of the lens adapter ring enhances light transfer and defends the lens without causing discomfort.5. Aluminum Alloy Materials: Crafted from aluminum alloy metal, the filter adapter ring boasts a refined and smoothly finish, with the high strength and toughness characteristic of aluminum alloy materials.Specification:Item Type: Filter Adapter RingMaterial: Aluminum AlloySize: Approx. 49mm / 1.93inApplication: for Action4.Package List:1 x Adapter Ring