ULTRA HEAVY DUTY DOUBLE LOOP. STAINLESS STEEL SPLIT RING. THESE ARE EXTREMLY STRONG RINGS AND A SPLIT RING OPENING TOOL IS REQUIRED{PLIERS, TWEEZERS,OR SMALL FLAT HEAD SCREWDRIVER}. THESE ARE EXTREMLY STRONG RINGS AND A SPLIT RING OPENING TOOL IS REQUIRED{PLIERS, TWEEZERS,}.