If your car bobbles like a kid in a bouncy house after you hit a pothole, your shocks, struts, or coil springs probably need to be replaced. For the do-it-yourself mechanic, this is a job you can complete at home, but you need spring compressors to do it safely. Automobile suspensions rely on powerful coil springs to provide you with a comfortable ride, and you need to replace them periodically to keep your ride smooth. Spring compressors remove the coil springs from your car, which is necessary when you need to replace the struts or shocks besides the coils. Not using a compressor for this job can result in injury or death when the springs expand upon release. These tools compress the springs and allow for safe removal, preventing them from flying loose from their pockets at high speeds. There are a number of different types of compressors available for your needs, too. A strut spring compressor quickly and safely recoils your springs, giving you access to your spring sets, struts, and shock absorbers. A valve spring compressor allows you to remove springs and spring keepers without removing the cylinder head. Luckily, reliable sellers on eBay offer a large inventory of new and used compressors, and with convenient shipping options, the tools are delivered to your door, saving you from bouncing up and down the streets to the store.