So about 7 months ago I got some awesome pro-line trenchers (the rubber is a little too soft for street driving). The front ones didn't have a hex shape, they were just a circle so I had to sand down my hexes and make some custom round ones for the front. I had been driving them until two weeks ago when I caught the side of a jump and broke the plastic part of the wheel between the hex and the nut. I contacted pro-line, and too my surprise I was able to get a replacement. They arrived today and to my dismay these don't have anything to screw a nut on to. How am I supposed to use them?
I went ahead and got some pictures and as you can see the hole is very large relative to the shaft that goes through (all inappropriate connotations ignored) The nut almost fits through but maybe 1mm all the way around touches plastic if I bolt it on. I just want to be sure that there isn't a different way to do this before I use them.
I am sorry the photos may be very large, I have no way to re-size them with my website