Replacing the strainer / aerator in the battery - selection of elements

Good morning,

The plastic strainer in the kitchen faucet has fallen out and the metal holding it has worn out. Is it possible to buy the strainer only or the entire tip (i.e. this sleeve with two threads) or install an aerator?
If so, I would ask for a bearing.
Unfortunately, I don't know the brand / model (the faucet is about 15 years old.)
I would like to add that the hole in the sleeve has a diameter of 20mm and it is smooth, i.e. the strainer is pressed in, the strainer itself has the following dimensions: the plastic part - 19mm, the metal part, or rather what is left of it - 18.5 mm



Best regards,
Michael

You should be able to buy the entire aerator with the same strainers, I have not met. Take the whole thing to a water and sewage store and adjust something if the thread does not fit, you will translate the strainer itself.

Personally, I have not encountered replacement perlator inserts, even if they were just a little cheaper than a new one,
it would not be profitable for the producer to make such a production, and when you go around the gang, form one
"cartridge" made of a properly kneaded kitchen wire made of stainless steel,
I used to do such a village when I was repairing a silencer on a WSK motorcycle.
And it is best to keep the whole thing in a descaler after disassembling it or in vinegar overnight.

Thanks for the answers.
I may be wrong but the metal element with two threads looks specific to this tap. I can't find anything like it on the internet.

So it seems to me that the best thing was actually the push-fit insert for the aerator with a diameter of 20mm. If you can find something like that.