Silicone Rubber Anti-Release Safety Lock Plug for GoPro Mount X 2PCS The U shape of this locking plug inserts between the legs of the click-in tangs portion of the camera mounted quick disconnect mount, after the camera mounted clip legs are inserted into the female receiving sticky back tape mount. It's more for high speed applications like auto racing, as it keeps vibration down so the camera doesn't rattle and this plug helps ensure the legs can't bend in and accidentally release the camera. Compatible with all gopro Cameras Made of high-quality material, it is soft to your camera Packaged Included: 2XRubber locking plug