I build cedar furniture and had built 6 cedar office chairs. I found the bases I wanted on sale but I had to buy the whole chair. That left me with 6 chair's without the bottom assembly's so I bought one of these to give to a friend it bolted right up and they have a new office/computer chair now.I gave it 4 stars only because of the casters, they are all plastic. With that said if you do not push the weight limit they are just fine.