Techny's EZ Strut String Compressor was designed as a strut spring compressor for SUVs and pick-ups. It works on virtually all vehicles equipped with coil over struts. The tool hydraulically compresses conical, offset and tight wound springs without having to turn a lead screw. Compressing arms with a pivoting head self-seats to a variety of strut mounts and compresses the spring while keeping the spring and strut aligned. Stationary and movable locking jaws accommodate a variety of spring diameters and helix variations, without replacement.