MARINE MOORING SPRING / SNUBBER FOR BOAT - 316 STAINLESS STEEL - FIVE OCEANS -------------------------------------------------------------------------------Marine Mooring SpringStainless SteelThese Five Oceans mooring spring are made of marine grade stainless steel (AISI 316) and are great to absorb excessive strain on mooring ropes, and also reduce the risk of breaking them or loosening the rope fittings. > Stainless Steel (AISI 316)> Material Diameter: 5mm> Length: 10.5´´ (270 mm)> Breaking Load: 3527 lbs (1600 kgs)> Recommended for 20 ft (6 mts) boats