My husband spent 3 hours to put together the 4 chairs.  It required an Allen Wrench to put it all together and that made it slow.  Once they were assembled, we were very pleased.  The only complaint we have is that the backs aren't as comfortable as ones we're replacing, but the old ones had padded backs.  In general, we're very pleased.

Pros: Great value
Cons: Time-consuming to assemble