First of all, nowhere near as bright as I thought it would be from all the reviews I read on here prior to purchase. Not sure why it's specified the primary material as 'metal', the rings are plastic! Chrome style finish looks ok, I just think this is deceiving. In the pictures the lights look bright white, when in fact they are more of a warm white, and not that bright. I wouldn't say it needed to be dimmable, and I am glad I have other spot lights in the same room. I was worried it would be overpoweringly bright, so that worked out well. I think it looks great, but for the price, not the quality, or effect I was expecting.