The Master Lock set your own word combination TSA-accepted luggage lock features a 1-3/8 inch (35mm) wide metal body for durability. The 1/8 inch (3mm) diameter shackle is 3/4 inch (19mm) long and made of steel, offering resistance to cutting and sawing. Transportation security administration (TSA) screeners can open, inspect and relock bags locked with a TSA-accepted lock.