The Master Lock No. 4695EURTAST TSA-Approved Luggage Locks feature a 23mm wide ABS plastic body. The 3mm diameter shackle is 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.