Features:

• 4-pack of keyed luggage/baggage locks
• TSA-approved; allows TSA screeners to inspect baggage without damaging locks
• Solid brass construction for optimal security and durability
• Convenient, keyed alike sets ideal for family, group, or any multi-luggage travel
• 7/8-inch (22mm) body; limited lifetime warranty

Editor Reviews:

Product Description:
4 Pack, TSA Accepted Luggage Locks Are Keyed Alike, Allows Screeners To Inspect & Relock Bags Without Damaging The Lock, 7/8" 22mm Solid Brass Body.

Amazon.com Product Description:
Lock up several suitcases, backpacks, or other luggage quickly with this 4-pack of locks from Master Lock. The locks are TSA-approved, allowing airport security screeners to inspect and relock baggage without damaging the locks. Solid brass construction ensures optimal security and rust-resistance. Keyed alike, the locks are ideal for family or group travel with the guardian or leader holding the key to all four locks for easy access. --Brian D. Olson

Rating : - great for the money
These locks are great for the money. A couple of notes
1. A previous review mentioned that it's possible to unlock by pulling the shackle - I was a little concerned when I made the purchase - and I did a test immediately after I received mine - I stick in a screwdriver and tried my best to pull - nope it refused to unlock. Not sure if this is because of a different batch, but hopefully this can help some potential buyers make their decisions.
2. The keys and locks appear to identical, 1 key works for all locks. This is a plus for me as I don't need to worry if I lost a couple of keys(there are 8 in total). If you want more security, it would be minus.