Deluxe Lens Kit For Gopro Hero4 Hero3+ Camera 52MM 2X Professional Telephoto Lens With High Definition 52MM Wide Angle Lens + Close-Up Macro Filter Set (+1 +2 +4 +10) With 3 PC Filter Kit UV CPL FLD Adapter 52mm For GoPro Hero4 Hero3+ Black Silver White Camcorder With PHoto4less Microfiber Cleaning Cloth Top Bundle 52mm made of Aluminum Alloy Allows you to use larger size filters on lenses with a smaller diameter thread. The first number is the size that screws into the lens, the second number is the filter size. THIS PHOTO4LESS KIT INCLUDES 52mm 2X Professional Telephoto Lens - High Definition 52mm Wide Angle Lens - Camera & Lens 3 Piece Cleaning Kit - GoPro Adapter 52mm 3 Piece Filter Kit (UV-CPL-FLD) 52mm + 4 Piece Close-Up Macro Filter kit 52mm