I fly with several Pelican cases full of gear for work. I use TSA locks on my cases just as a precaution. On my first flight with these locks, two bent to the point where they were unusable, and one was no longer on the case when I picked it up at baggage claim. Now, that could have been because a TSA agent didn't re-lock the lock, or it could have broken like the other two and fallen off during the flight. Either way, these are not a good option.