For a carabiner that lives in harmony with our belay device, we look to the Black Diamond GridLock Screwgate Carabiner. The innovative belay retainer keeps the carabiner in its proper orientation as we give our partner a catch, no more dangerous cross-loading. The unique pear shape keeps our system streamlined while still giving plenty of room and a smooth surface for a Munter hitch. From icy alpine sends to sandy desert routes, the screwgate remains operational, never freezing or gunking up.