CTA Tools 5220   Gm Door Spring Compressor Designed to Remove and Install the Door Hinge Springs For Use on Cars and Light Trucks with Larger Diameter Springs Use with a 1/2-Inch, Open-End Wrench or Ratchet-Box Wrench Heavy-Duty Construction Allows for Strength and Durability Whether Tuning up Your 68 Corvette or Changing the Oil on a John Deere Tractor, CTA can Supply You with the Tools Needed to do the Job