I purchased this piece for a small bedroom, and due to the layout of the room and my poor planning - it didn't quite fit right.  I have heater that runs along the floor on one side of the room that kept the piece from fitting perfectly in a corner. Luckily for me, I was able to remove the corner piece and use this as 2 piece set of small glass desks. I'm very happy it was "adjustable."  Please note that there are no instructions - I was able to adjust using the provided pieces on the fly.  The seem sturdy in use with the additional corner piece.  

I would advise that this might not be the best corner piece (meaning the glass is rounded and it will never fit neatly into a corner of the room). You should plan on using as pictured.