Worst parts ever for putting together a piece of fiber board furniture. First will talk about the screws. Softest metal ever. Heads strip away too easily. Second, the threaded parts, wow, never had to use separate threads, and the pieces they give you, if they move a mm or are a mm off, they do not work. The idea is great, however, other brands do a much better job executing the idea. The piece of furniture itself is beautiful, but it is extremely heavy. Enjoy insanity.