WEJUANR Brass Adaptor Various Sizes Available 14.12/16/18/20/22/24 mm Kitchen Sink Tap Aerator 360 Degree Swivel Aerator Internal or External Thread (Colour: One Piece 18 mm Female) : Amazon.de: DIY & Tools
Juvielich 5PCS Faucet Aerators Faucet Flow Restrictor Replacement Parts Insert Sink Aerator for Bathroom or Kitchen 18mm - - Amazon.com