I don't recommend this lamp at all. After I screwed on the arms, the whole lamp faces 180 degrees the wrong way. So the base and arms are facing opposite directions, making it extremely unstable and dangerous. The manufacturers want you to loosen the base to make it face the correct way and tighten it instead using bolts and a hex key. This makes it SO unstable and crooked. You can literally shake the arm back and forth. It's horrible. The threading on this lamp is so messed up.