Chrome springs are among the best quality springs in the industry, you just need to understand how to choose the size and installation method, you can save your sofa or recliner and other furniture, suitable for most spring replacements. Chrome-plated springs will not rust, rebound memory, you can also use Bolt Cutter to cut to fit your size. The clips and steel nails provided are small but strong enough to prevent cracking of the frame and also suitable for installation on the side of the frame. The spring repair kit contains 2 parts: ①Repair part: 27-inch spring * 4, spring fixing clips * 10, steel nails * 27, extension hooks * 4 ②Fix the whole part: 25-inch fixing glue iron wire * 3, glue iron wire clips * 20, stretching small hooks * 10 To the upholstery store to find a professional may cost several hundred dollars, their own repair, and replacement, so that the old furniture back to the original is an economic choice. There is no paper installation introduction, but there are videos and pictures, after all, it is necessary to understand how to install well before buying. We have various sizes of springs, also have other matching accessories and tools. 27 inches