ID tags are only valuable when they stay attached to your pet, which is why Nite Ize improved upon the standard tag hangers that come with them. The TagLock is made with a durable, colorful lightweight aluminum body and features two locking stainless-steel gates. This TagLock allows you to easily clip ID tags to the D-ring of your pet's collar or harness. Then, with a simple twist of the center lock, the gates securely lock and stay that way until you twist it open again. Sturdy and ultra-secure, not only does the TagLock provide ease of use, but peace of mind. It's simply the best way to keep your pet's ID tags where you want them and makes adding or changing tags a breeze.