The Master Lock No. 4684T Set Your Own Combination TSA-Approved Luggage Locks feature a 1-3.8in (35mm) wide bright color body for simple baggage identification. The 1/8in (3mm) diameter shackle is 3/4in (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-Approved lock. Lock your checked baggage with the lock TSA screeners won't cut.