I ordered the cherry wood seats.  They have to be assembled by attaching the seats with four wood screws.  I used an electric screwdriver so attaching the seats was quick and easy.  The chairs are very sturdy and may be the last dining room chairs I ever need to order.  Over the years I have bought several sets of wooden, replacement chairs that have only lasted about five years.  Those chairs became wobbly after a few years.  These metal chairs feel like they will last forever.  If I do happen to ever need new chairs, I will definitely look for this type again first.