Moen Aerator Removal Tool

This is for a Moen Camerist kitchen sink faucet model 7840SRS but will fit any model that uses a Moen 3919 aerator. This particular style does not have any flats on the metal for a wrench or any key-way in the plastic aerator. This design slots into the outer aerator holes (16.45mm outer diameter). It will loosen the threaded metal ring enough to complete removal by hand. Once the aerator is loosened with the tool the plastic insert just rotates and won't unthread more. To install, thread the aerator finger tight and stop or use the tool to snug it up. Go slow because over-tightening will break off the tool splines. PLA filament printed with a 0.4mm nozzle at a 0.2mm layer height prints fine. Didn't test printing with a .2mm nozzle.