The LockStar II for CR-3 & CR-4 Swivel Carabiners (2-pack) from BlackRapid are connector covers that can be purchased as spare or replacements for those that come with current BlackRapid products using CR-3 and CR-4 swivel carabiners. These covers snap onto the strap’s ConnectR hook and prevent the ConnectR lock from coming unlocked during use. They also prevent the metal hardware from coming into direct contact with the camera body.