Use this handy tool to remove/install the original threaded style A-9020 gas tank filler screen. This is the screen inside the tank under your gas cap. Throughout production, Ford used a 'threaded' style screen as well as a 'tab' style screen. This tool will only work on the 'threaded' style screen. Drop the tool into the 4 female grooves of the screen and turn out using a 3/8" drive ratchet. Due to some variations in the screens, you may need to file the 4 male notches slightly. U.S.A.