KingChain® Simplex Snaps are formed flat spring wire snaps. They are ideal for light-duty, non-load-bearing applications. Use for key rings, lanyards and other applications where weight load is not a concern. Can be very useful around the house or shop. The pre-assembled swivel eye eliminates tangling or twisting from whatever is attached. Made from low carbon steel with zinc plating for corrosion and weather resistance.