I love my stools.  I only needed 3 for my bar but since they sold in pairs, I ordered 4.  Glad I did.  The extra one looks good off in another corner.  They are sturdy and comfortable and really nice looking.  I had been looking for new stools for over a year but couldn't decide on any until I saw these.  
They were fairly easy to put together although I had difficulty with the first one because I did not follow the rules.  It clearly said to not tighten the bolts attaching the legs to the seats immediately.  But I did and then I couldn't get the last part to line up.  So I loosened the bolts and all was well.  The rest of them went together with no problem.  Only thing I would mention is that I don't think the seats are grey at all like in the picture and in the description.  They are definitely black but that is fine with me.  In fact, I almost didn't order them because I did not want grey.