Wait, the UN-54 and UN-73 are hollow axle as well? That is why I was after the UN-72...I thought it was an upgrade from the UN-52 because it was lighter due to the hollow axle.

Are you sure about that, Cizzlak? I have not seen any of those at Nashbar nor Performance.

I have the tool and can uninstall and reinstall myself. I did measure it while it was removed. Measures at 111mm with a Vernier. I have seen 110.5, but I'm sure I'll be okay with a 68x110. I know Harris Cyclery has some, but I am trying to find out which ones, but they don't take phone calls and are slow on emailing.