The Master Lock No. 4688EURD Set-Your-Own Combination TSA-Approved Luggage Lock features a 30mm wide metal body for durability. 3mm diameter shackle is 40mm 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-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.