This pack of five durable, waterproof, write-on key tags takes the mystery out figuring out which key goes to which lock. This innovative design allows for secure attachment to most key types and can be easily removed. This pack of five durable, colorful write-on tags make key identification simple. The innovative design allows for secure attachment to most key types and are also easy to remove if needed. Simply write-on the tag with permanent ink, attach it through the hole in your key and boom - now you know what that key goes to.