Features 1.304 Stainless Steel: Made of marine grade 304 stainless steel, the mooring spring is sea water corrosion resistant. 2.Main Function: This mooring spring is used for easing the shock loadings on anchoring and mooring warps, which will help to reduce boat movement. 3.Other Function: Used to absorb excessive strain on mooring ropes in bad weather conditions, lessening the risk of breaking the ropes or loosening the rope fittings. 4.Two Part Design: The shock absorbing spring adopts two part design rather than a single length of wound steel wire, which is more flexible to use. 5.Application: Mooring springs can be used with rope or chain, which is widely uesd for marine boat yacht. Specification Item Type: Mooring Spring Material: 304 Stainless Steel Product Color: As Pictures Shown Product Size: Approx. 11x405mm / 0.4x15.9in Product Weight: Approx. 3101g / 109.4oz Package List 1 x Mooring Spring