These SP 9625 trampoline springs from Prime-Line are constructed from 0.125 gauge, heat-tempered, spring steel wire plated in a bright nickel finish. They offer superior strength and long lasting tension. These springs feature a single loop, open-ended design and measure 3-1/8inch in length by 13/16inch in diameter. This type of spring can be used to replace most trampoline springs and works for a variety of other household applications. For best results, follow the installation instructions included with each package. These parts are easy to replace using only a few simple tools. Please refer to the line art drawing for dimensions and compare with your needs before purchasing.