The Master Lock 4680DNKL Set Your Own Combination TSA-Accepted Luggage Lock features a 1-3/16in (30mm) wide metal body for durability. The 1/8" (3mm) diameter shackle is 3/4" (19mm) long and made of steel, offering resistance to cutting and sawing. Easy to set and reset numeric combination. Features 3 dial combination security for keyless convenience and unique side window for easy combination viewing. 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 wont cut!