ATD 7549 Â Coil Spring Compressor The ATD 7549 Coil Spring Compressor from Advanced Tool Design compresses coil springs for the installation and removal of springs and spacers. This tool's strong steel jaws securely hook into the automotive coil spring. The ATD 7549 fits most American and some imported cars and light trucks, but this tool does not work on AMC and Ford with upper coil spring. Be sure to wear safety goggles when using this product for added safety. ATD 7549Â