1. Easy to Operate Strut Spring Compressor designed to withstand extreme pressure in any environment, ideal for professional mechanic and automotive repair novice. It can compress the coil spring to replace the shock absorber unit or spring; For repairs on bent struts, strut tubes, and damaged pieces; Easy and superfast setup 2. Widely ApplicationUsing a 3/4' or 19mm socket and ratchet to turn the main shaft to compress the strut spring enough to ly remove the fastener nut holding the cartridge. It is widely compatible with struts assembly that can be removed from the vehicle to transfer the old spring to the strut 3. Locked into PlaceThe coil spring compressor tool has a threaded rod with broad spring and builtin detent pins to lock the coil spring in place for r spring compression; it allows for durable and smooth compression of springs both on or off the vehicle with hand or power tools. 4. Build to LastThe spring compressor is constructed with forged hooks and a center screw hardened for maximum strength and longevity