I bought 4 sets of locks for a overseas trip. The luggage was not opened by TSA - no note in luggage. The locks feel solid and work well. The weird part was that out of 4 locks - 2 of them work with same key and other 2 work with same key. Having used small luggage locks, I do realize many of the locks from a manufacturer share the same key. These locks are more for TSA than theft deterrence.