The Orbiloc Carabiner and Mount are a must-have for any strap, backpack, apparel or larger dog collar. The Carabiner is composed of lightweight metal, and the Mount is made of hard plastic. The Carabiner is included with the Outdoor Dual and can be used to attach the Safety Light without bumping or bruising the chest of smaller dogs. Shop now and get 1 Carabiner and 1 Carabiner Mount. Refer to our User Guides and "How to" Videos for more information.