I bought this pump about two years ago, and have used it exclusively and multiple times each week since. About 3 weeks ago, I clamped it onto my rear wheel (presta) as always, and it dod not sesl. I went to the shop where I purcahsed it and they were out of replacement parts. In the meantime, I have been overinflating the tire and racing to disconnect. Lame, but effective until I can get it fixed. I would order a replacement part from Specialized site, but can't find it there; only selling pumps as far as I can tell.

First of all, it looks expencive not cheap knockoff that they sale everywhere. I use it for two bicycles: first is "" specialized"" with tick valve like a car and second is "" trek"" with tin valve, ( sorry I don't know the real name for it), and it works great. Secondly it is really precise and accurate.this is the best pump I have owned so far.

I've had this pump for a year and a half, and have had absolutely zero problems. I find that it is easier to connect to the valve and more accurate air pressure readings compared to other friends/riders pumps I have used.