moen aerator tool

thingiverse

Moen aerator tool uses a 14mm socket to remove the inner aerator. A tight fit is essential; avoid using "elephant feet" or sanding will be necessary. Tighter is better, making removal easier with minimal torque required. I've also included a key for the outer collar. Remove the aerator first, then the outer piece. When using the key, exercise gentle care to prevent breaking any teeth off. The smaller key is stronger and more reliable.