My son has been using this bike, and the other day he came home with a bolt that had come off. I checked it out, and it looks like there's also another part missing—the other end of the quick wheel release. I assume it's the same as this one on the front.
Is there any way I can get a replacement? I think it's maybe just called a "quick release nut", but are they at all standard? It doesn't look like this bike is even sold anymore, so could I just buy a generic one (or even the whole quick release assembly if necessary)?