Mooring Spring with SS Bolts 7mm (GS61177) by Recmar Mooring springs help to reduce the tension in the mooring lines. Mooring springs, also known as nautical shock absorbers, work to lessen the swaying of a boat when it is berthed at a marina, making the atmosphere for the user more stable and comfortable. The principal purpose of mooring lines is to keep a ship securely anchored to its berth in the face of wind, current, and other pressures. Wind or current loading on the mooring lines is a static load if the lines are appropriately set. A dynamic load would be trying to halt a moving ship with a line. Key Features: Top-quality Mooring Spring 100% Brand new and made with the highest-quality materials in the industry Polished stainless steel High-resistance Complete with squeak-proof caps and s.s bolts Designed with the highest level of craftsmanship Exceeds OEM Specifications Built to perform Compact. Easy to store, carry and install. Designed to provide convenience and comfort Approve marine-grade product also be used when anchoring to prevent stress cracking around cleats Specifications: Brand: Recmar Condition: Brand New Quantity: 1 (one) SKU: GS61177 UPC: 8.43541E+12 Weight: 1.30 LBS Unit of Measure: EA Manufacturer Part Number (MPN): GS61177