I finally put these together and they're really nice.  Mfr. recommends treating with teak oil but I think it needs a light sanding before I do that. Directions were clear, everything was included- all the proper hardware.  The last 4 screws in each chair had no pilot holes drilled so I did that, but otherwise they look great.  Hope they're as sturdy as they seem.  Wayfair is pretty awesome, I must say!