Package:200pcs 12mm X 19mm Black Plastic Detachable Cap Cord Lock Stopper Bell Cord Ends with Lid Material:nylon Size:approx 12mm X 19mm Color:black as the picture show Durable,not easy to damage.Widely used for lanyard, luggage, clothing, backpack, sportwear and so on. For locking cord, tie a knot on bags and jackets, easy to fit. Great for use on sweat pants or hoodies to keep from losing the drawstring and to tighten the drawstring as well. Great used for lanyard, drawstrings, luggage, clothing, backpack, laundry bag, jacket, hat, storage bag, hoods, hammock, tent, outdoor and so on.