Spring Loaded Design: - The double-hole cord lock is for locking the cord for convenient use and will not cut the line. With a strong spring-loaded design, provides you with a firm grip, helps to stop the cord or drawstrings from slipping, and keeps your rope lock tight and secure. Plastic Cord Lock: - You will get 20pcs of spring stopper fastener, various colors and enough quantity can meet your daily use and replacement. Hole Diameter: 4mm/0.16"; Total Size: 9x24mm/0.35"x0.95"(Dia.*H) Quality Material: - The cord lock is made of plastic material, durable and lightweight, has good wear resistance, not easy to break and rust, long life without fading. Stylish color and modern look make your clothing look more attractive and fashionable. Easy to Use: - Press the button down and hold it while threading the drawstrings through the holes in the lock, once the drawstrings are through, release the button, then adjust it to the desired position. The cord lock will keep your drawstrings in place and not easy to fall off. Wide Application: - These cord locks fit a variety of different drawstrings and types of cords. Can be applied to pack drawstrings, shoelaces, pants closures, backpacks, outerwear, elastic rope, pants, hats, tents, luggage and a variety of outdoor and gym products.