7/16 in (11 mm). 7/8 in (22 mm). TSA accepted. Travel Sentry approved. Same key opens all locks. Tough under fire. Contents: 4 padlocks. Lock your checked baggage with the lock TSA screeners wont' cut! Transportation Security Administration (TSA) screeners can open, inspect and relock bags locked with a TSA-accepted lock. Solid body padlock. Same key opens all locks - ideal for family travel! Limited Lifetime Warranty: www.masterlock.com. Vault: masterlockvault.com. Safely store your combo, key number, or confidential data. www.masterlock.com. Made to exclusive Master Lock specifications in China.