The Master Lock No. 4683Q TSA-Accepted luggage locks feature a 7/8 in wide solid metal body for durability. The 3/32 in Dia shackle is 7/16 in 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.