Features and Benefits: This compressor fits most late-model rear wheel drive domestic vehicles in which the coil springs are between the upper and lower control arms The tool features four case-hardened self-aligning plates to ensure correct load distribution under tension Includes two 3-3/8 ID plates and two 4 ID plates Will not work on Mercedes-Benz vehicles lifetime limited warranty This compressor fits most late-model rear wheel drive domestic vehicles in which the coil springs are between the upper and lower control arms. The tool features four case-hardened self-aligning plates to ensure correct load distribution under tension. Includes two 3-3/8 ID plates and two 4 ID plates. Will not work on Mercedes-Benz vehicles.