Petzls Universel is a soft steel torque piton. The loop is angled by 45°. The piton uses the torque from the loop and therefore provides firm and secure grip. This soft steel hook adapts to the course of the crack and therefore reaches far into the rock. Moreover, the hook ensures reduced tension on soft (lime)stone. The disadvantage of this system: soft steel torque hooks are often hard or impossible to remove from the rock.