TSA APPROVED: The luggage locker 2 is accepted by the TSA so that TSA inspectors can unlock luggage with an official security control key. With the ZHENGE TSA case combination lock, you have to lock it again before you can remove the key so that your belongings are always protected. And if the lock is ever opened, the red opening alarm indicator will pop up to notify you as soon as you pick it up at the airport. EASY HANDLING: Code setting is easy with the flip-and-set button on the bottom. Instructions can be found on the back of the package. High contrast of white numbers on black wheels makes it easier to read. Equipped with an advanced damping device that clicks into place with each dial to improve alignment accuracy. It is a user-friendly TSA lock suitcase that is suitable for both young and old. SAFE & ROBUST The TSA combination lock 4 digits allows you to set your own combination with 10,000 options. That is ten times more secure than a 3-digit lock number code. The TSA case lock made of high-strength zinc alloy is robust enough to withstand even the toughest luggage conditions. The slide-open feature is advanced and unique in the market. It is extremely resistant to technical and violent unlocking. FLEXIBLE CABLE: The flexible cable can be led through all standard size zippers on suitcases, backpacks, travel bags, briefcases and pelican cases, etc. With a total length of 5.5 inches, the reinforced cord can connect 2-3 sets of zippers at a time to secure the whole case or bag. It is not only a TSA luggage lock for travel, but also a perfect locker padlock for the gym, school, drawer, tool box, cupboard, etc. GUARANTEE: Every suitcase lock comes with a 12 month guarantee and lifelong technical support. Should you need any assistance, our professional and friendly customer service team is available 24/7. BUY WITH CONFIDENCE .