The Prestolock Gen Security Luggage Padlock is a TSA-approved combination lock made of zinc alloy with a 3-dial design. It has a shackle clearance of 0.25 inches and comes in an assortment of colors. This padlock provides reliable security for luggage with a 10,000 possible combination code that is set by the owner. It is lightweight and easy to attach to zippers on suitcases, backpacks, gym bags and more. The Prestolock padlock allows TSA agents to inspect luggage using a special tool, without damaging the lock.