The stools are well built and look very sturdy. As others have said, these are awful to put together!  It is definitely a two person job, and takes strength. Make sure there is no cloth blocking the holes; do the two middle holes on the seat first; make sure the seat and back are perpendicular or you won’t get the alignment; don’t tighten until all screws are in place for your step. I would definitely pay any extra money to have these chairs sent pre-built.