Ange Finesse Quickdraw S - 5 Pk by Petzl Petzl's MonoFil Keylock ensures smoother opening and closing of the carabiner and a much longer lifetime compared to traditional wire gate carabiners The unique H-profile of the carabiner allows an optimal size and strength-to-weight ratio The indent on the bottom of the ANGE carabiners helps keep the STRING in place so that the sling is properly positioned on the carabiner. The FINESSE 10 mm wide Dyneema sling offers an excellent weight to strength ratio The STRING S holds the rope end carabiner in place and helps protect the webbing from abrasion