Master Lock 4688D Combination Security Code PadlockTSA accepted luggage lock enables screeners with the ability to inspect and relock luggage without damaging lock Set your own three digit combination luggage lock; TSA lock is best used as a luggage lock or backpack lock Travel lock is constructed with a metal body for durability and a vinyl covered cable for resistance to abuse from baggage handling equipment 1 3 16 in. (30 mm) wide lock body; 1 8 in. (3 mm) diameter shackle with 1 1 2 in. (38 mm)