"Don't be fooled by the product description. I've bought two sets of these (16 in total) and not one casts even the slightest bit of light. Sure, the price is great, but what they aren't telling you is that you need to buy something else (i.e., send them more of your $$$!!!) to screw these into. Well guess what, we the consumers are the ones who are really getting SCREWED! On their own, they are useless, and according to some people, toxic. What a rip-off! "