Bests & Worsts Reviews from Amazon

This is a great compact Aerator. It is easily installed and it's operation is nice and smooth. To change from aerator to spray you just rotate the head, this is unlike some of the other units, which, use a push-pull method. I think, that, this puts less strain on your faucet's fitting. It's a little more money and I believe, that, it's well worth the expense, this aerator is ALL METAL - not plastic! ■■■■■■■■■■■■■■■■■■■■■■■■■■■■ HOW TO SELECT A MALE OR FEMALE AERATOR: Determine whether your faucet spout is female or male threaded. Female-threaded spouts have their threads inside the end of the spout; male threads are found on the outside of the spout. If your faucet has female threads, you'll need a male threaded aerator. If your faucet has male threads, you'll need a female threaded aerator. I've included a few images to show the faucet and aerator differences. As you can see, this is a fairly straight forward selection process, I hope, that, this helps you with your selection.