Finding the perfect multi- tool is hard. This is one of the most compact and wide range tools i have owned. Only complaints- i would like a flat head and the Philips does not work well with shallow derailleur adjusters.
I purchased this tool when I could not find the Topeak Alien(TM). This tool is functional in a pinch. The plastic housing makes it feel cheap. I have used the tire levers and the chain breaker, both worked fine. The allen wrenches are a little awkward to use as the large plastic housing can get in the way if your are in a tight spot. I never ride without a tool like this, because one never knows what is ahead! For the price it is a pretty good purchase.