Great locks, used them on my flight to Cleveland and at the airport was asked if they were TSA locks. Had a notification on my bag that my bad had been opened- but like these locks make sure, my bags were RE-LOCKED and everything was good! I suggest buying these for any trip through the airport. Don't zip tie because if your bags get chosen to be open they will cut the zip ties and not re lock it. These force the TSA agents to re lock your bags!