The pneumatic leg was defective. I specifically ordered this table because it was supposed to be adjustable height. Since one of the legs was defective, I had to initiate the return process and a replacement desk was shipped out quickly. Thankfully the replacement desk turned out OK. Good thing this desk will only hold paperwork and files, etc. Anything heavier may not work as the desk is pretty lightweight. I like that it has wheels and is a compact size.