I don't know if I'm the only one who didn't know this, but apparently, a multi-tool is not allowed (edit:in carryon luggage) on commercial flights anymore. I was flying to spend a week riding, with a small multi-tool in my carry-on. I also had shoes, cleats, pedals, a saddle and lots of electronic gear. The TSA guys went through every inch of my luggage, until he said that it looked like I was carrying an allen-wrench. Of course I was - I didn't know they were illegal. But, they took it, giving me the option of checking my bag or mailing it home - although, one of the guys just started to walk away with it while I was trying to decide what to do. Luckily, there is a post office in the airport that was open for five more minutes, so I bought a padded envelope and mailed it to myself. Bottom line - no tools on airplanes - even allen wrenches.