I forget the actual size of this thing, but I first went and bought a real socket of this size. The darned thing cost $30 or something. (And I needed an adapter for the 3/4" drive.) And because it's made for huge torques, it didn't even fit all the way into the hub--I think I could get the outer nut out, but not the inner one.
And then when I was buying parts, I found this:
http://walcks4wd.com/spindle-nut-wrench.htmlA fraction of what I paid for the other one, and made for the application. Save yourself the aggravation and pick one up!
-Paul