TSA-approved: TSA aaccepts the TSA combination lock, so that the TSA control officers can lock the luggage with an official key to the Security check unlock. With the Zhege TSA padlock, you must lock it again before removing the key so that your belongings are always protected. Simple to use: The resettable 4-digit TSA suitcase lock allows you to set your own numerical code with 10000 unique options. Simple 5 steps and instructions are always included. Small and robust: The small, lightweight TSA luggage lock comes with a shackle made of hardened steel and a case made of solid zinc alloy. It's tough enough to withstand even the toughest luggage handling. The locking mechanism is weatherproof and will not rust or freeze. The professional finish will not come off. Wide application: With a temple diameter of 3.5 mm The small TSA padlock number code threads through all kinds of zipper holes on luggage, suitcase, backpack, laptop bag, briefcase, camera bag, hiking backpack, handbag, etc. It is also portable padlock for gym, school locker, closet, etc.