Assembly is easy, but the welding of fasten plates is off.  One chair, even with a person sitting while tightening the bolts, is still off square and wobbles.  One plate was welded covering part of the opening.  Bolt would barely fit by raising plate and putting bolt all the way in the hole so it would go in straight past the leg.  Even then it was hard to fasten.  Also two of the metal frames on the seat bottoms had chatter scuffs on them out of the box.  Not just a couple but over a large area.  Packing seemed adequate.  Inside top of back frame of one also had scuff marks.  A Sharpie mostly covered it.

Note that the back slopes more than with most chairs so, when you lean back, you are reclining a bit.