The Master Lock No. 4691DWD Set Your Own WORD Combination TSA-Accepted Luggage Lock features a 1-3/8in (35mm) wide metal body for durability. 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-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.