MaximalPower CA GP J-Hook Vertical Surface J-Hook Buckle Mount for GoPro HD Hero 2,3, 3+,4, 5, 2 Pack (Black) This J-Hook Buckle can be used with flat surfaces,especially helmet and chest belt Compatible with: Gopro HD, Hero 4, Hero 3+, Hero3, Hero 2, Hero HD, GoPro Camera comes with 1 year warranty on every parts included Made of high quality polycarbonate This J Hook Clip Mount is specifically designed for use with your GoPro camera, allows you to attach your GoPro camera to a chest harness or adhesive helmet mount. Its design means the camera is further away from its mounting point, therefore allowing additional angles to be achieved when filming. Such attached cameras to the helmet, allowed you to shoot freedom in outdoor activities.