Hello,
Thank you for using Q&A.
Aerators usually screw in/out. There should be two flat parts on the sides of the aerator which allows a spanner to be used. Once removed, measure the diameter of the threads. The aerators that Screwfix sell have M24x1 Male Thread i.e. STROM MINI FLOW TAP FLOW RESTRICTOR & AERATOR (6177R)
Hope that helps.
Answered by: Screwfix14
Date published: 2021-11-08