The hole is so small only a tiny luggage lock will fit!
Too bad it doesn't have a larger hole for a normal "small" lock. The only lock that will fit is a silly little lock that can almost be twisted off by hand.
I only bought this for the ability to lock it, as my neighbors like to help themselves to anything not locked up.
Now I have to take a dremel and open up the hole which will further weaken the lockability! PATHETIC!