1. Protect your expensive lens from dust and scratch while not lowing your photo quality. 2. ND filters washed out photos & video due to bright sunlight for better contrast & rich color. Significantly reduce lens flare and ghosting while making the filter anti-scratch, reduce reflection, increase surface durability, water resistant, oil & dust resistant. 3. CPL filters: Remove unwanted reflections from non-metallic surfaces such as water or glass and glare from the sun. Increases color saturation, creating deep, rich scenic images. Helps to reduce the amount of light entering the lens. 4. UV filters: Reduce haze and improve contrast to your video and digital images by the amount of ultraviolet (UV) light. Especially useful in areas of high altitude, snow, or beach, eliminating the undesirable blue cast. Top level of transmittance 5. Portable and durable, easy to install. 6. Lightweight, high transmittance and low reflectivity.Specification: General Compatible with Gopro: HERO13 Black, HERO12 Black, HERO11 Black, HERO10 Black, HERO9 Black Package Weight One Package Weight 0.14kgs / 0.30lb One Package Size 15cm * 12cm * 2cm / 5.91inch * 4.72inch * 0.79inch Qty per Carton 100 Carton Weight 14.00kgs / 30.86lb Carton Size 42cm * 30cm * 30cm / 16.54inch * 11.81inch * 11.81inch Loading Container 20GP: 705 cartons * 100 pcs = 70500 pcs40HQ: 1637 cartons * 100 pcs = 163700 pcs