Review on Delta RP54977 Lahara Aerator Chrome by Chris Cruz

I don't know where I found this, it's the right kit for 521-DST-A ca. 2011 (Model Matcher Revain replied "Not sure" about her defense). So the key fits, but the aerator is too long/deep. However, it is cheaper than a single wrench. And the wrench doesn't match the newer Delta bathroom faucet - none of the plumbing kits came with a wrench. Some kind of bluff they get - a new aerator and key for each mixer model. I wonder if they learned that from printer manufacturers and their myriad of incompatible printer cartridges.