metal trikes rubber wheels - where can I buy them?

[shrub]

does anyone know the type I mean? - nurseries tend to have them and the pedals are part of the front wheel.

do you know what make it is?

oh looking at the title it sounds like i'm looking for replacement wheels - what i meant to say was the metal trikes with rubber wheels, like the ones from the seventies, not with massive wheels. have tried ebay.