The Master Lock No. 4681TBLK TSA-Accepted Luggage Locks feature a 1-1/4in (32mm) wide solid metal body for durability. The 3/32in (2mm) diameter shackle is 9/16in (14mm) long and made of steel, offering resistance to cutting and sawing. The protective plastic cover protects against scratches. 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.