Because of the slightly thicker casing around the lock hole, you can't use a typical luggage lock on most pelican cases. This item does the trick perfectly with the flex cabling that can be fed in the hole. With only 3 digit combo, one could argue that with enough time someone could figure out the code, but considering that it is used for shipping only, that argument could be made for most combo locks. The amount of slack in the cable allows someone to slightly open the case, but when I messed around with it, I was unable to actually pull anything out. If you need to lock your pelican case for shipping, this is a great get!