The Master Lock No. 4696D Set Your Own Combination TSA-Approved Luggage Lock features a 1-5/16in (35mm) wide metal body for durability. The 1/4in (6mm) diameter shackle is 1-7/8in (48mm) long, offers extended reach for use on equipment cases and is made of steel, offering resistance to cutting and sawing. Transportation Security Administration (TSA) screeners can open, inspect and relock bags and cases locked with a TSA-Approved 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.