1、Metal Spring Cord Locks: Keep your drawstrings, shoes, backpacks, and clothing securely in place with these durable and rust resistant metal spring cord locks. 2、Lightweight and Versatile Design: These zinc alloy cord locks are lightweight and can be easily attached to a variety of items, including hats, pants, sports gear, tents, umbrellas, and outdoor and fitness products. 3、Easy to Use: Simply thread your drawstring through the cord lock, pull it tight, and the spring mechanism will hold it securely in place. No need to worry about your drawstring tangling or coming loose during activities. 4、Durable and Long Lasting: Made from premium zinc alloy, these cord locks are built to last. They are resistant to rust and can withstand the wear and tear of everyday use, making them perfect for outdoor and sports activities. 5、Convenient Quantity: Each pack includes 30 metal spring cord locks, providing you with plenty of options to secure your drawstrings and cords. Whether you need them for DIY projects, repairs, or replacements, this pack has you covered.