A bag of screws 2 x Rocking Chair Springs (Installation Instruction NOT Included) The top-mounted version is used in all recliners currently manufactured Spring Dimensions: 6" L x 2" W x 2" H The set includes 2 springs, mounting screws. The spring base is made of 304 stainless steel, which will not rust and has greater strength. This top-mounted rocker spring fits chairs from most manufacturers today. There is a fixing nut on the inside of the mounting hole, so there is no need to manually position the nut in a small space during installation, which is convenient for installation. We provide one year warranty, if there is a problem, you can contact us through Amazon and we will refund you or provide you with a new set of springs.