Exceptionally cheap and shoddy materials. The pilot holes in the shelves are basically nonexistent, which makes it impossible to get the screws in straight. A screw actually burst through the top of one shelf, ruining it. Which is just as well; the shelves are abnormally close together, and I had to leave one out to get enough space for some of my things. Still, the end result is rickety and uneven and looks terrible. It does the job in the sense that it can hold my stuff, but I'm going to replace it as soon as is feasible.