/diy/ - Do It Yourself

>>1668762
It has teeth at the edge under the goo.
The faucet came with a plastic "wrench", usually blue or yellow, a combination of a thumbscrew and a pipe with teeth. If the person who installed didn't leave it behind under the sink or in a drawer, usually small needle nose pliers work.
Yours doesn't look like a delta faucet, but the aerator and wrench look like pic