This unique tool allows removal and installation of valve springs while the engine is both fully assembled and still in the car. It is professionally made of high quality materials to handle not only stock springs but the pressures of high performance springs. The advantages are many for both the technician as well as the VW enthusiast. This unique tool comes complete with a plastic spacer wedge to keep the retainer & spring compressed while the 3/8" drive ratchet is removed allowing for better access. The use of a ratchet as a lever handle allows rotation at any angle for maximum clearance in a variety of applications. This tool will also remove valve springs on disassembled engines.