The Master Lock Number 4688D Set Your Own Combination TSA-Accepted Luggage Lock features a 1-3/16 in (30 mm) wide metal body for durability. The 1/8 in (3 mm) diameter shackle is 1-1/2 in (38 mm) long and made of vinyl covered flexible braided steel, offering resistance to abuse from baggage handling equipment. 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.