I bought this pump because the pressure gauge is mounted at the top of the air cylinder where it is easy to see while pumping, which is a very nice feature. However, within a year the so called SmartHead (takes both Presta and Schraeder valves without adjustment) failed. The locking lever pivot pin popped out and air leaked out of the pressure head near the pivot point. Re-seating the pin did not fix the problem. I contacted Topeak and they sent me a new SmartHead. It worked for a while, but this morning it failed again. The failure mechanism was exactly the same. There must be s serious design flaw in the SmatHead. I am now seeing this same failure being reported in other on-line reviews.