[Engel]

Looks great serendipity, I'm glad Raffy approves. Design wise, yes it would be rat friendly. Wheel size is too small for the majority of rats. My 2 are very small and use a lot of hamster size stuff so in theory for mine that'd be fine. But for my previous rats it would need to be a minimum of 14". Be interesting to see if they, or anyone else for that matter, sell larger versions.

I went for a speedyhog bucket wheel as it's a lot deeper allowing 2+ rats to run on it at the same time.