Replacement Recliner Sofa Chair Mechanism Tension Springs Long Neck Hook StyleRecliner Tension spring for recliner mechanism reclining chairs and sofa chairs. Mechanism assist / lock / tension spring. Suitable for reclining chairs, sofas and tension springs also applied to other items, like car, bike, toys, furniture, moulds, hardware, electrical appliances and so onQuality Materials: The Tension spring of this lounge chair is made of galvanized steel wire material, and the galvanized high carbon steel spring can provide appropriate tension, neither too hard nor too soft. Easy to install and clean, not prone to rustingLong neck hook type stretch spring recliner and sofa chair mechanism replacementPackage Included: 1 x 3-5/8 inch Recliner Tension Springs