Yeah they're nice cages, but I have to say the wheels are a pain, cos they have an annoying tendency to fall out when we take the cages outside for cleaning and we have to carry them over the grass. Have solved that by buying cheap nasty casters from the local hardware store, they weren't a perfect fit so I jammed some double-sided sticky tape in there and
voilà, they don't fall out any more! Don't ask me why the same trick never worked on the original wheels but it just didn't, they kept falling out