Feature: 1. Metal Frame: The filter frame is made of aluminum alloy material, which extends the service life of the filter, ensures the hardness and reduces the weight. 2. Silicone Protection: The part in contact with the lens is made of silicone material, which can effectively protect the camera lens and have a fixed effect. 3. Optical Glass: The lens is made for SCHOtt glass, the surface is multi coated, has a high uniform refractive index and high refractive index, color fidelity, no dark angle. 4. Simple Operation: With a snap, simple and fast operation, no complicated steps, quick installation step, to provide you with convenience. 5. Action Camera Filter Set: Our filter set includes CPL filter, ND8 filter, ND16 filter, ND32 filter to meet your daily use needs. Specification: Item Type: ND CPL Action Camera Fiter Weight: 65g/2.3oz Material: Aluminum alloy and silicone and glass Suitable Model: for Action 4 3 camera. Package List: 1 x CPL Filter 1 x ND8 Filter 1 x ND16 Filter 1 x ND32 Filter Note: 1. The product should be stored in a cool, ventilated and dry place, and the storage temperature should not be higher than 40 degrees.2. Before use, please check whether the components of the product are complete.3. Do not let the lens contact sharp objects, dirty with alcohol and clean cloth.4. Do not touch the lens with your fingers.