This mooring spring serves as a powerful shock absorber on mooring warps, it reduces shocks for both your boat and the pontoon, maximum tensile strength: 200 KG. Mooring spring helps to reduce the cracking caused by the stress around the cleats and can also be used when anchoring. an extra spring can reduce boat damage caused by impacts. Mooring Springs can be used with other ropes or chains, although the spring is built to last and is very durable, users are advised to place other ropes and chains parallel to the spring to avoid direct contact between them. Dimensions: Diameter: 5.0 (3/16 inches); Length: 270 (10-5/8 inches). Package Includes Pack of 1 Marine City 304 Grade Stainless Steel Boat Anchor Dock Line Mooring Spring Shock Absorbing.