Neewer 52mm Filter Adapter Ring for GoPro Hero 3+, Hero 4 Mount Filters to Your GoPro Allows you to attach 52mm filters. Made of high quality anodized black aluminum(metal). Extremely solid and lightweight. Note: Compatible with GoPro Hero 3+/4 ONLY! NOT suitable for Gopro Hero 3 (using 58mm Adapter not this 52mm Adapter)!! Specifically designed for your camera for a tight and secure fit. No wobbling or cross-threading.