The Camp USA Guide Lock Carabiner is a Climbing carabiner for those that like the letter D. Shaped like the letter you love, this locking carabiner closes with a screw gate, ready to lock in and get you up on that rock. Clip in with one hand if you wish, the keylock nose will encourage smooth clipping as you gear up for the next route. Final SALE: For safety reasons, we cannot accept returns on load-bearing Climbing equipment. Sorry for being so mean. Features of the Camp USA Guide Lock Carabiner Very strong and durable carabiner for heavy use Keylock nose for clipping into anchors