These look nice and feel sturdy.  The seats are not one solid piece,  but do look well constructed. Assembly is impossible though, without a drill.  There are foam washers to go between stool legs and cross beams, and they push the bolt hole out of alignment, so that it takes a lot of force to push them together and get the holes re-aligned.  So it’s impossible to force the bold in by hand.  I fought with this for a while before giving in and getting the drill.  With the drill it was easy.  Overall, I like these a lot.