Stainless Steel 304 Spring Snap Hook Carabiner with Screw Lock, 2 1/4 Inch -Set of 4 Stainless steel screw locking carabiner key ring, key-chain, snap, hookand for any outdoor equipment gear...( not for climbing) Package contents: 4x lock carabiner hooks, 2  inch Added security of screw lock mechanism to keep closed and load secure. Material: Made of 304 stainless steel that protects against corrosion Versatile binding, rigging & anchoring hardware - quick connect/dis-connect of ropes