This is the LARGE format SX adaptive optic system. Used but works just fine. You ONLY get what's in the pictures. I've used it and it cleans up a ton
of mechanical issues. Cake to set up. Driver can be downloaded from Starlightxpress no problem. Note the marks from where it was attached to the telescope.
Optics are good. Motors work just fine. Actually WORKS with MaximDL just fine. keep in mind your saving 650 bucks off new!!!! One more thing I used this behind a Planewave CDK 20 and 24 inch scope. I have an adapter for that purpose so, if your interested we can talk about that too. I don't want a ton for the adapter.