This TSA 3 Digit Combination Lock made from durable metal. I use one every time I travel on a plane. If the lock is missing it give me the ability to check my bag before I leave the baggage area. If I notice anything wrong I can make a claim right there. Smart. Never lost anything while traveling. TSA agents have a key if they need to inspect your bag and then re-lock it. 

Size: 2.75" x 1 1/8" x .5"  

Retail price  15.00