Planned to spend a fantastic overcast Melbourne afternoon putting new brake pads on my new money pit. Unfortunately for me, each wheel has a locking nut on it. Naturally, the previous owner has decided to either lose, or keep, the key.
What the car did come with was a 19mm double hex socket, attached to a metal bar for a bit of leverage (it then occurred to me that this may BE the key). Of course, the socket was broken in half, and I don't have another.

I'm sure someone else has had problems with locking nuts before. Is the 19mm socket what I'm after? Or is there something easier?

It's an EL wagon if that makes any difference

Cheers guys!