This modified D-shaped carabineer is strong & versatile. It has a large body and a 1" opening for easy clipping. The stainless steel body and auto-locking gate provides extra strength. Auto-locking decreases the possibility the user will forget to lock the gate and prevents the gate from unlocking from vibrations while working. This makes it a great choice for a wide variety of industrial and sporting applications. Meets ANSI Z 359.1 standards. 30KN.