This compressor makes spring chang-es and ride height adjustments simple. Works for 2-1/2” and 5” springs. Simply install compression ring and hardware onto shock. Install shock assembly onto compressor and locate the guard. In-stall compression fork into the compres-sion ring and compress with the jack. Make the spring adjustment to proper ride height and release the jack and remove the shock and spring assem-bly. Includes (1) Compressor and jack assembly, (1) Safety Guard, (1) Com-pression Arm, (2) 5” Spring Adapters, (2) 2-1/2” Compression Rings and (3) Push Pins.