Kats, thank you for your kind words.
Heyitsrama, the diameter of the hoop/tubes are just over 19mm
There is a photo of the feet removed.
7tooZ, the reproduction rubber foot grip I had CAD drawn from an original, the 3D printed in plastic. For me, the look was much more important than being in the right material. Now, most owners won't use their footrests as much as when originally fitted, as the cars are much more covetted. Your footrest hoop would have to be that diameter, is it?
I sold restored footrest to a member here, maybe if he is looking, he can say what he think to my replacement foot grip.
I am out of these foot grips, so if there was going to production run, I could look at a group buy. No, I don't know what the last lot cost, as I cancelled the order, but they still came to me, for free! Yes, I made them in two halves, otherwise how do you ge them on...