Works well once I found that the thumb screw is a reverse thread?!?
I tried for ages to get the screw to catch into the hole but then on closer inspection of the thread I noticed that you have to turn it anti-clockwise to tighten it, even though there are arrows on the plastic pointing clockwise?
For this reason it loses a star.
Fits easily and firmly without the velcro provided on a Samsung 6 38" LCD TV.