Hi, am looking for a set (or odd ones) of plastic clip-in wheel centres for a Hymer B654SL, but they are common to many other models.

Can provide an image of what I'm after if necessary (once I've managed to take a sensible photo later today or tomorrow) but they're a silver version of the one shown

Can anyone assist, please?

Willing to pay a sensible price and postage for the right article(s) - ignore the price shown in the post