Advantage: Each spring clip has 4 separate holes where nails can be used to fix the springs to the frame, with 4 separate holes allows more catch points to ensure the spring does not tear free from the frame. Application: This sofa spring repair brackets can be used for spring fixing, whether it is a seat, a backrest spring, such as a sofa, a car seat, etc. Material: These spring clips are made of metal, and each clip is insulated by a plastic sleeve. It is a good silencer. Features: These springs provide a great extent of support, allowing the springs to be installed safely and securely. this is the best spring clip for fixing the seat sofa. What You Get: 20 pieces of upholstery furniture spring clips, enough to meet your needs., Weight: 0.9700339528 pounds, Manufacturer: ECSiNG