Using the Petzl Pantin with a CROLL, ASCENSION or BASIC ascender keeps the body in a more upright position when ascending fixed ropes, making for faster and less tiring vertical progress. It's Chrome plated steel cam with angled teeth and self cleaning slot securely grips the rope, even in muddy or icy conditions. The cam has been refined to increase the efficiency in which the ascender glides on the rope. The wear area has been moved lower on the cams surface to increase its durability. The cam engages without losing a millimeter each time it is weighted and glides smoothly up a rope with a minimal of effort.