Vivitar 52mm Ring Filter Adapter for GoPro HERO3/ HERO3+/ HERO4 + 52mm Vivitar Professional HD 2.2x Telephoto Lens (MPN: V-52T) + Tristar Optics 62mm Filter UV/CPL Bonus Pack (MPN: 24-166-8433) Vivitar 52mm Adapter Ring for GoPro HD HERO3, HERO3+ and HERO4 Allows you to mount any type of filter or lens converters with a 52mm thread 52mm Vivitar Professional HD 2.2x Telephoto Lens (MPN: V-52T) Tristar Optics 62mm Filter UV/CPL Bonus Pack - UV + Circular Polarizer + Pouch (MPN: 24-166-8433) High speed auto focus, Day or night lens Perfect for party shots, sports or close-ups, Includes Carrying Case & Cap, High speed auto focus