I'll have to look into it a bit further when I have a chance. These aren't the permanent set of studs for this bike, probably going with Marathon winter x35s next year, that way I can keep my fender set on. I may just run this set up like this for the rest of this winter. Not like I have more than a month or 2 to go anyways, and I don't get to ride in as often as I'd like anyways.