4 Digit TSA Lock - Approved Travel Padlock for Suitcases and Baggage - All Metal Construction - Black Protect your luggage with a 4 digit combination padlock made of high quality zinc alloy and steel (no plastics) 4-Digit lock offers 10,000 combinations and takes 10 times longer to crack than 3-digit locks Tsa approved and travel sentry accepted locks allows tsa screeners to inspect your luggage without damaging the locks Numbers are easy to maneuver, reset and set to your own preferred passcode