If you haven't removed your faucet aerators in a long time, good luck, especially if you have a plastic "hidden" recessed aerator. These come with a round plastic tool for removal, but I spent several days trying unsuccessfully to remove two aerators. I had a plumber at my house doing another project and I asked him to remove it. He couldn't and suggested that I buy a new kitchen faucet. Today, I received this Danco tool from Amazon, and the aerator came right off.
https://www.amazon.com/dp/B07CWM4PBX...roduct_details