Vinny Mauro wrote a review of Park Tool I-Beam Mini w/ Chain Tool - IB-3 on April 17, 2014
Familiarity: I've used it several times
Personally I generally prefer to carry more full sized tools with me since I have plenty of space in my pack. However, if you are looking for a super compact multi-tool that has everything you need out on the trail this is a great option. If you're hoping to keep your baggage light, you are in the right place. In my opinion you definitely sacrifice a lot of usability getting so many tools in such a small package... but the idea is that you will rarely use this and just keep it in your saddle bag, jersey, hat, shoe, etc. in case of emergency repairs so usability is not really a big issue. The price is surprisingly reasonable as well consider the Park Tool name, so I'm happy with my purchase overall. The tire lever is thin and not the most confidence inspiring so I personally carry another additional lever, but the incorporated spoke wrench is quite clever.