Recently I purchased a pretty sturdy dual battery box. I had had one before but it was hit and damaged severely enough that I disposed of it. After installing its replacement I realized I still had the keys from the original box and, as it is human nature to do, I had to satisfy my curiosity. I grabbed the spare keys and, wouldn't you know it, they opened the new box. I assumed that every box shipped with a new set of keys. Evidently not. Or, is it just a coincidence that I would get an exact copy of the keys I had previously? Also, as I have a pair of propane cylinders I would like to protect (to the extent that I can) I bought this lock I can't help but think that anyone with enough time (and I don't think it would take much time) and a pair of pliers could easily back the threaded rod out of the base mount while at the same time screwing it up into the lock enough to be able to remove the cross bars which secure the tanks in place. I'd like to think I'm wrong but what say you?