these chairs are great!  we got 2 sets of beige for our new dining table.  putting together 8 chairs was a fun chore.  Id say it could take you 10-12 minutes for the first chair and then about 6-8 minutes for the other chairs.  extra screws and bolts were included in both sets we bought.  chairs seem sturdy.  with 2 little ones, leather upholstery has been our preference for being easier to clean messes out of.