TSA Certification The lock has a TSA certification mark. When you are in the process of customs inspection, the customs officers will identify the sign, unlock it with a special customs lock key, and re-lock it when it is finished. Your suitcase will not be forcibly opened to avoid damageLatest Version & Security Upgrade 4-digit password combination password, security upgrade! 4-digit numbers can be combined into 10,000 combinations, it's harder to crack and more secure. So you don't have to worry about key securityEasy To Read & Easy To SetDesign upgrade, with a password window on the side for easy observation and alignment. The black wheel engraves the white number so you can see the password clearly. Each time you dial a number, you will be able to jump a single digit accurately, won't get stuck, and won't dial the wrong one. Greatly reduced the difficulty of setting passwords for password locks on the marketHigh Quality - Alloy MaterialIt adopts advanced baking varnish technology, zinc alloy shell and zinc alloy lock core, which is exquisite and durable. The high-strength zinc alloy can withstand falling, knocking and damage without damage, making it a safe and reliable protection for your luggage and lockersMultiple Uses Our locks are not only used for luggage, backpacks, doors, cabinets, gym lockers, school lockers and even parking locks