We have sold well over 500,000 commercial bag dispensers since 2009.
100% aluminum, hand welded, powder-coated with mounting holes/slots that allow you to attach to a sign post, wood post, fence, or lamp post. You could probably bolt one to your car door if you were so inclined.
Each dispenser has a lock and 2 keys. All the keys are the same so fi you have 100 of these, the same key will open all of them.