Sorry robin, I thought these would fit. I thought you had different hubs. I will refund you if you like but there's no need to send them back
sorry mate.
....I know you sold them to me in good faith. I'm afraid it's also my ignorance in not understanding the hubs difference (as danish Jake says).
The ideal would be if you had another buyer and I could post the guards on to them and then you could refund.
If not, I think a refund would be fair but I would insist that they are returned to you so you might at least be able to sell them elsewhere and not be so out of pocket. I wouldn't feel happy having a refund
and keeping the goods, much as I appreciate your gesture.