BeautyMood 6 pcs Zinc-Galvanized Steel Carabiner Spring Snap Link Hook - Sizes 880MM - 3'' Sizes: 5/16 x 3-3/16" (8 x 80mm) Versatile binding, rigging and anchoring hardware - allows fastest connect/disconnect Push gate in to open - auto-close spring gate with interlock tooth prevents load forcing open Grade 316 stainless steel has superior corrosion resistance and greater strength over grade 304 Allows quick connect/disconnect of ropes, chains & straps; see desc. for size/load specifications