I'll tell you what I used them for and what worked and what didn't. I recently purchased new Moen chrome aerators for Moen bathroom fixtures. Low consumption and not happy. I found these replacement inserts that say they are 2.2 gpm. Can be easily replaced. What didn't fit were the rubber discs that were too big. Only use the ones I had, works great. Again high consumption! They are great for Moen aerators with old shims.
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