Use the Lisle Fuel Tank Lock Ring Tool, No. 63000, to remove and install plastic fuel tank lock rings, from 4" to 7-1/4", without damage. The channel design on the body allows the legs to adjust to fit a wide range of applications, and keeps the drive centered. This tool works on the new smaller GM serrated rings and traditional rings. The design is compact so the tool is not left hanging over the work area with the potential for hitting other components.