I purchased these for travel cases containing computer equipment. The shank is a bit short and a little difficult to insert through the locking tab on my luggage (Pelican AirCase).  I had 2 identical cases and TSA only opened one of them.  The one they DID open was left unlocked (the lock just hanging on the luggage, fortunately it didn't fall off) and we couldn't figure out why, until we tried to re-lock it and were unable to.  The combination no longer worked. I'm hoping that Forge can instruct me how to reset it...