Title: Don't buy it! Not as pictured, doesn't work as stated.
Review: First, what you get does not match their picture. No fancy profile on the washer, just an ordinary O-ring on a shoulder bolt. Guess they decided to cut costs. I just tried these out on a clients house and had to go back to the traditional type faucet washer, as these caused a pronounced water hammer, and converted the faucet to an "on-off" function, ie. no adjustment for flow rate. As soon as water began to flow, it was at maximum. When shut off, the water stopped instantly instead of gradually, which caused the water hammer. These things are a COMPLETE waste of time and money.
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