The Master Lock No. 4681EURTBLK TSA-Approved Luggage Padlocks feature a 30mm wide solid metal body for durability. The 3mm diameter shackle is 15mm long and made of steel, offering more strength. The protective plastic cover protects against scratches. 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.