This is a fabulous desk chair!  It arrived quickly and well packaged. All parts and hardware obviously were included in addition to spares and a really nice handled Allen wrench for assembly.  It was easy to pit together although I did need help with attaching the metal back to the backrest because you have to push down hard on the cushioning to get the screw to catch.  The castered wheels roll easily and smoothly and chair does adjust updown easily.  Over a wonderful desk chair that’s sturdy and comfortable to sit on!