Check the listing for details. 29.5" Upholstery Spring Replacement Kit, Sagging Cushions Repair Kit Silver. Condition: New. Listed at 23.04 USD. Description:What You Get: This sofa spring set includes 1 pcs 4.8cmx75cm/1.89"x29.5" (W x L) arch spring, plus 8 pcs 10cm/3.94" balance hooks, 2 pcs S spring clips, and 6 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.