Support very "tough" .It weighs 12 kg and is very well designed: the two swivel arms scissors and the base plate on the wall 500mmx245mm inspire confidence about the robustness of the whole. I used it for a 40 "plasma TV weighs 20kg and mounted on a wall plasterboard by molly bolts 8 can support each 45kg.Cela is 10 days and no apparent problem but I do not use the full deployment, just a lateral direction of 30 °. I recommend this product and this brand