Single Hole Spring Loaded Round Ball Shaped Stop Sliding Cord Fastener Locks Buttons for Camping & Hiking, Shoelace Replacement, Sports, Backpacks (20 Pieces) Black colored and made from plastic material that is strong and durable to use. The dark color will match with all your clothing with ease. Plastic single hole cord lock is used to lock the lace or paracord for convenient use. With spring loaded design, these round cord locks are sure to keep a firm grip on whatever the use is for. Simply squeeze together and the cord lock can move freely up and down. When released, tension is engaged and the cord lock stays in place. These are great for use on sweat pants or hoodies to keep from losing the drawstring and to tighten the cord as well. Can also be used to replace lost or missing barrel locks. Firm grip cord lock fits a variety of different drawstrings and types of wires. Can be used on everything from shoelaces, pack drawstrings, pants closures, paracord products and a variety of outdoor and gym accessories. Widely used for lanyard, luggage, clothing, shoe bags, sportswear and more. Each package includes a total of 20 round sliding chord locks. Enough quantity for your daily using and replacements. Round toggle stoppers with spring loaded design, can keep a firm grip on whatever the use is for, easy to install. Measurements of round cord locks are 0.7" inches long x 0.6" inches Wide (19 x 15 mm). Made of plastic with an internal loaded spring with a strong tight hold. Simply release the tension of the lock to slide up and down on your cord until you draw the string to its desired position. Firm grip cord lock fits a variety of different drawstrings and types of wires. Can be used on shoelaces, pack drawstrings, pants closures, paracord products and various outdoor and gym accessories. Each package includes a total of 20 round sliding chord locks. Enough quantity for your daily using essentials and general replacements on clothing varieties. Measurements of round cord locks are 0.7&#034; inches long x 0.6&#034; inches Wide (19 x 15 mm). Made of plastic with an internal loaded spring with a strong tight hold.