The Petzl Spirit Screw Lock is a locking carabiner for Climbing use. Compact and durable, this locking 'biner is ideal for belay stations. The conventional, manual screw-lock system is easy to use while the keylock makes for smooth use without the snags. Final SALE: For safety reasons, we cannot accept returns on load-bearing Climbing equipment. Sorry for being so mean. Features of the Petzl Spirit Screw Lock Carabiner optimized for lightness and durability Very compact shape is ideal for belay stations H-shaped cross section offers an improved strength/weight ratio Wider contact surfaces for better rope glide and reduced wear on the carabiner Screw-Lock locking sleeve for good handling and effective locking Visual indicator facilitates checking that the carabiner is locked Keylock system helps prevent snagging of the carabiner during maneuvers Designed for better rope glide and to ensure good positioning of the belay device Shape adapted for easy tying or untying of a clove hitch