Outdoor Survival Airsoft Paintball 1 Inch Metal Snap Shackle Tactical Clip for Sling and Paracord Bracelet, Black Very sturdy, made of high quality nylon and metal. Quick & easy detachable swivel designed to fit most firearms with swivel studs. You can use this for sling adapter, almost for anything either with loop or hook. Can be used as a key chain or a pocket clip for keys, which can bear enough keys' weight. Other decorative use, such as military line decoration, or used as braided ropes for paracord bracelet.