The SnapSafe TSA Padlock protects your valuable belongings when you travel. This all-metal SnapSafe combination lock has a 4-digit code, plus a key lock that allows TSA screeners to inspect luggage without damaging the lock. Its made of durable metal, and is 10 times harder to crack than 3-digit locks. The SnapSafe TSA Padlock is great for securing metal cases, camera equipment, or personal luggage for storage or air travel. 2 per pack. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Locks.