13/14 inch SBP Wheels

I can't find a size or part #, but, measuring them I feel they are 5.5 wide. I'm going to figure the 13" wheel to have no value and use it as a base for my "portable" bench grinder stand. Currently it's mounted to my "bench" and is taking up space, not to mention that it throws debris everywhere while I'm using it. Mounted on a stand, I can move it around out of the way when not in use and free up some bench space and minimize flying debris in the process.
Thanks