These Zip Ties come in a pack of 25 and are just the right size to secure a spare mouthpiece. With thousands of uses, a pack of 25 zip ties might not be enough. Useful to secure just about anything to...well...just about anything. These strong, durable zip ties measure 6 1/4 inches long, making them great for a multitude of projects. Great item to keep in your save a dive bag. You never know what you might need one for.