Must Have Filter Kit For Gopro Hero3+, HERO4, (Works with Hero 3 ONlY with NEW STANDARD HOUSING AHSRH-401) Includes 52mm 3pc. Filter Kit (UV, CPL, FLD) + Carry Pouch + Gopro Lens Adapter + More UV Protective Filter: Prevents loss of sharpness and contrast by filtering out UV rays and Haze. Protects Lens from scratches, scuffs and smudges CPL Circular Polarizer Filter: Uses Polaroids patented Polarizing techonolgy to give you total on location control of color saturation, make skies bluer, grass greener-even eliminate surface reflections from glass and water FLD Fluorescent Filter: Eliminates that annoying greenish tinge which fluorescent lights add to photos. Don't let anyone tell you it's impossible to mount filters on a GoPro camera. This GoPro Hero3+ and Hero4 Lens Adapter Features: Allows you to mount any type of filter or lens converters with a 52mm thread, such as: Linear Polarizer Filters. Circular Polarizer Filters. Neutral Density Filters. Graduated Neutral Density Filters. UV Filters. Warming Filters. Cooling Filters. Close Up Filters. Wide Angle Converters. Fisheye Converters. Tele-Converters. Comes with 52mm Adapter, Allen Key, Lanyard This Kit Includes Some Of The Essential Accessories You Need To Take Full Advantage Of Your New Gopro Hero3+, HERO4, (Works with Hero 3 ONlY with NEW STANDARD HOUSING AHSRH-401) Action Cam