Yes, exactly.
I get great results with Rustoleum Professional out of the rattle can. If you can give the part plenty of cure time it really is super tough. See who's got better shipping rates on your side of the water.
I'd rather buy the black one though, I don't have much space in my flat to spray anything, especially stuff like metal where you need to let it cure outside most of the tile (due to the chemicals ><)
so is 7" better or 8"? XD