It's the Kamado Joe rotisserie on a Big Joe III. Given that it's for a Kamado grill - and therefore variable height settings aren't possible because you want to cook with the lid closed - it's about as good as it can be. No complaints at all. Other than the price, because it's not cheap.

I think it will fit a few other brands, but you would probably want to check in with someone who has both because the fit does matter when you're trying to get enough of a seal to be able to properly control airflow.