These aluminum snap hooks are good for backpack, key ring, chains, water bottle, camping, hiking, fishing, pet, indoor and outdoor equipment. These locking carabiners are often used to hang water bottles, binoculars, umbrellas and other items in outdoor activities, and they can also be used to hang keys, masks and other small objects. It can play a big role in your daily life. Improve your marketing campaign with this colorful and customizable tag.