Heavy Duty Macpherson Strut Coil Spring Compressor Clamp Set Remove Shock Absorber Or Spring Tool Car Repair Tool 1. Threaded rod with wide spring contact and built-in locating pin for locking the coil spring in place for safer spring compression; 2. Threaded rods allow for permanent and smooth compression of springs inside and outside the vehicle with manual or electric tools 3. Reinforced with forged hooks and center screws to maximize strength and service life. 4. Using a 3/4"or 19 mm sleeve and a ratcheting spindle, compress the strut springs to safely remove the fastening nut that secures the cartridge 02 application: Designed to withstand extreme stress in any environment, it is ideal for professional mechanics and new car repairers. Description: 1. Lubricate the two spindles with oil. 2. Align the hook with the retracting safety pin so that the hook is mounted on the spring 3. Place the two sets of hooks 180 on opposite parts of each other. 4. Push the safety pin into the locked position on the hook. 5. Using a 3/4"or 19mm sleeve and a ratchet to rotate the spindle, press the strut spring enough to safely remove the fastening nut of the fixed cartridge 03 note: 1. The color of the blow box may vary, and you may receive items with a black or red carrying case that do not affect the function of the item. 2. Do not use the influence driver! caveat: Compression springs can cause bodily harm and always wear safety glasses and gloves