The ANGE S carabiner is ultra-light (28 g) and compact: it is ideal for mountaineering and multi-pitch climbing where weight reduction is key * Petzl"s MonoFil Keylock ensures smoother opening and closing of the carabiner and a much longer lifetime compared to traditional wire gate carabiners. The wire gate is protected from lateral rubbing (against rock, etc). * The unique H-profile allows an optimal size and strength-to-weight ratio * The surfaces that come in contact with the rope and with the anchor are wider, favoring passage of the rope and reducing carabiner wear * The indent on the bottom of the ANGE S and ANGE L carabiners helps keep the STRING in place so that the sling is properly positioned on the carabiner