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.

The switch hitter head makes this pump Super easy to use. High volume chamber gets my tires from completely flat to ride ready about 30 pumps. For daily use one or two pumps keeps my commuter bikes at maximum capacity for efficiency and flat protection.