Amazing quality for the price - very heavy and strong parts. Holds my 235 pounds easily and securely and the hydraulic lift is strong enough to hold me.  Very impressed with the ergonomic design as well - my neck  shoulders  lower  back love it, even after hours of sitting. I especially appreciate that it will go from a low desk height to a drafting height. The built-in desk in my apartment is too tall for a normal desk chair so I had terrible neck pain and carpal tunnel issues.  Now I can adjust it to the perfect height. I assembled it by myself with no problem, but would suggest that the manufacturer redraw the instructions at step 4. I eventually figured it out, but the instructions were no help.  It’s a counterintuitive process and needs better illustration.