Check the listing for details. 2Pcs 17.7" Upholstery Spring Replacement Kit, Sagging Cushions Repair Kit. Condition: New. Listed at 26.90 USD. Description:What You Get: This sofa spring set includes 2 pcs 4.8cmx45cm/1.89"x17.7" (W x L) serpentine spring, plus 16 pcs 10cm/3.94" balance hooks, 4 pcs S spring clips, and 12 pcs reinforced screws for secure installation.Wide Application: These sofa upholstery springs are very suitable for various seats, such as recliners, dining chairs, chairs, sofas, and car seats. By using a sofa cushion spring replacement kit, you can save professional repair costs and extend the life of your furniture.Easy to Use: Fix the S spring clips in place using screws, then attach the springs. Place the wire across the springs you want to connect and secure the wire to the spring with the S clips, making sure the spring is firmly fixed in place to provide effective support.