Didn't find anything on ebay. Didn't find anything almost anywhere. I even got in contact with a chinese factory and although at the begining they made me care, at the end they told me something quite opposed and nothing happened.
About 12" wheels I am already thinking about the possibility but just because it is difficult to find what I truly want.
I already have a pair of 8" neumatic wheels. Don't know where they came from, maybe from an old wheelchair. The problem is that they are not prepared for freewheel installation. I want to use one of them as the front wheel.

Thank you very much

Help me, please!