Okay, so I was doing a fast lap yesterday at the local high school track, when I had a sudden blowout of my rear tire in the corner. I managed not to fall, but when I went to survey the damage and remove the wheel, I noticed that the hex bolt head was competely stripped.



The wrench won't even bite a little bit to get it out. What are my options here? Is there some magic way to remove these things other than with a drill or dremel? Any ideas on where to get a replacement?

It's a Mack hub if that makes any difference.

As of right now, this stupid bolt is putting the entire bike our of commission, as I can't even fix the flat.

Thanks.