A special socket, with a ¼ inch drive, for removing and reinstalling the cap for the cold water inlet screen on a Rheem tankless water heater.
The cold water inlet screen on a tankless water heater should be removed and cleaned as part of the annual maintenance/descaling flush procedure. This tool makes removing and reinstalling the cap for the inlet screen a simple process and protects the cap from being marred or damaged by the use of pliers or other similar tools not specifically designed for this purpose.
Material choice is up to you. I originally planned to print the final version in PC-CF, but the PETG prototypes worked well enough that I decided PC-CF was unnecessary. PLA would probably work just fine as well, since you shouldn't have a need to apply a large amount of torque to the inlet screen cap.
The author marked this model as their own original creation.