I ordered 3 of these stools and I am so happy with the purchase. They were fairly easy to assemble and I am a 66 year old female.  I am a bit handy though and did not any trouble with the assembly.   I was able to tighten them adequately with the Allen wrench provided. You must tighten them very well so they do not come loose with the swivel and movement of the stools. No other tools are needed for this project. Shipping was very fast   and items were well packed. 

Pros: swivel works nicely, comfortable, well made. good looking, doesn't look cheap
Cons: I would have liked a lighter color for the wood and the stool.