I just got these in and put them together.  As others reviewers remarked, as you put these together, do not tighten the screws all the way.  The directions say to put the frame together first (back slides into the bottom frame) however, we found that putting the chair back onto the two back pieces first, made it a lot easier to put the rest together.  My husband also found a bit for his power drill that was the same size as the Allen wrench they include.  The assembly went very quickly after that.  I am so far pleased with the look and quality of the upholstery.  Olive green was just the color I needed.  Being the cautious person I am, I ordered only two because it is so hard to determine if a piece of furniture works in the room without seeing it.  I have a pine table of antique wood from a former warehouse so was going out on a limb to bring in a more modern chair.  I think it will work!  Now, to order four more of these chairs.