The Master Lock Number 4684T Set Your Own Combination TSA-Accepted Luggage Locks feature a 1-3/8 in (35 mm) wide bright color body for simple baggage identification. The 1/8 in (3 mm) diameter shackle is 3/4 in (19 mm) 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. Lock your checked baggage with the lock TSA screeners won't cut! The Limited Lifetime Warranty provides peace of mind from a brand you can trust.