The Best J-Hook design for attaching a sport camera, or alternative action camera to GoPro style chest mount. Compatible with GoPro. This style of J-hook is compatible with other Action Mount Accessories, so you can easily adapt our mounts to work with your phone or other cameras you may already own. Action Mount is a US company specializing in manufacturing unique phone mounting accessories. Be sure to check out our entire line of wearable mounts, that let you use your own phone to record POV footage. This J-Hook mount can be used for for attaching your quick-release GoPro camera to a chest mount. Compatible With xiaomi, sony, point & shoot, and xiaoyi sports cameras if you combine the J-Hook with a screw adapter. See our other offer of Screw Adapters to allow use of other cameras with Chest Mount. Note: The chest harness is NOT included. With purchase you receive 5 J-Hook pcs.