It's hard to knock a product that works, but I'm going to try. I screwed this here $30+ dollar vacuum breaker onto Kohler's very nice, very brass, very heavy K-976 wall-mount elbow. Kohler's elbow features a chrome plated brass nipple that fits right in with the appearance and build quality of the elbow. I swear, together, this elbow & nipple from Kohler could probably be rigged to lift the front end of my car. And on that nipple attaches this vacuum breaker, which (they don't show it in the pictures here) tails off with a cheapie white-plastic-wrapped-in-a-chrome-jacket threaded section. (Update 9/18: Refer to the picture I included -- I'm holding the Kohler, next to a Hansgrohe vacuum breaker that I am using now.) That in itself wouldn't be so bad, except that after connecting the hose to the white plastic, there's 1/4" to 3/8" of exposed white plastic calling attention to itself, making this all look somewhat hacked together. At least it doesn't drip. So again, not to say it doesn't work -- it does -- but at this price, it doesn't match the materials and quality expectations of the Kohler part it's being fitted to. Frankly, I spent a few extra bucks on it because of the brand reputation, and feel like I got gypped for making that assumption -- I would have spent a little more time shopping and picked a different brand. Similarly, I'm not opposed to plastic innards if they work -- and they do -- but Kohler ought not charge a brass price for it! Update in September 2018: In July or August, after a bit more than 4 years in service, this breaker failed hard and fast. After a second or so of flow, the breaker cut off water supply to a just-usable dribble. Unfortunately, in doing so, it produced a "thunk" in the diverter handle. Naturally, I suspected the diverter valve was the problem so disassembled it first, before figuring out the real culprit. I've since replaced it with aHansgrohe 06510000 External Vacuum Breaker at about half the cost, and it's all chrome (no white plastic showing), and I've got better pressure than before, so for now I'm back in business and happy.
