QUALITY CARBON STEEL The coil spring control is made of carbon steel material, which is hard, not easy to deform and bend, , and stable, which is designed to easily adjust and control your cars coil springs and shocks DESIGNED FOR The coil spring compressor could control the rear end compresses coils to the maximum extent, and adjust coil spring for car. With a 2way adjustable spring spacer, you can customize the height and stiffness of your vehicles suspension for a smoother ride SIMPLE TO OPERATE The spring spacer supports spread and compress two ways to use, easy and fast to operate, firmly attached when installed and will not move. Ideal for DIY use, these compact spring compressors are easy to use and for maintaining your cars performance HOW IT WORKS By turning the nut to unfold or compress the coil spring, the double saddle keeps the coil spring properly aligned, providing additional clearance when adding larger tires PACKAGE LIST The product package contains a total of four spring adjusters, for the loosening or tightening of springs with small shock absorbers. This 4piece set of mini coil spring compressors is a musthave tool for anyone working on automotive repairs