The Aluminum D-Ring Locking Carabiner is the perfect platform for delivering your company’s message. With its features of Stronger and Lighter Design, Superior durable lightweight aircraft aluminum alloy, D ring Carabineers are very suitable for outdoor hiking, fishing, camping, traveling etc., The lock system will keep you staff safe. and ability to be used as outdoor hiking, fishing, camping, traveling, your audience will not only remember your message, but will also relate your company logo to quality.