This tool is made out of 3/8″ steel for Ames 2000SS, 3000SS, 4000SS. and 5000SS model Backflows. This tool is very secure in the slots of the 1st check to remove and replace it. The tool for the 2nd check fits on the pins for easy removal and replacement. Both tools are powder coated and work with a 1/2″ ratchet.