Maximum safety with just one action: The MAMMUT Bionic CrossLock Ultra Tough is the ultimate in safety carabiners. The new revolutionary anti-crossload mechanism provides maximum security and ease of use. It reliably prevents dangerous lateral loading as it features a locking mechanism that can be moved in two directions. This allows you to attach the carabiner hook to your belay loop extremely quickly and only using one hand. Once properly adjusted, the locking mechanism holds the carabiner hook in place during belaying. When you've finished, you can quickly remove the carabiner hook from the belay loop with one hand. A special coating makes the carabiner extremely durable. You can count on this item!