Gym rear wheel cover

Does anyone know where is could find the rear wheel cover for a 1999, will a newer model work?

They are o Ebay 10 inch or 12?

Maybe I’m not calling it by the correct part name. It is the piece that sits over both wheels, and back; like a fender

It’s cald a SPAT.

Great, and thank you. How do I know if it fits a 10 or 12 inch

Spat is generic - fits all