They are very cheaply made but appear to be quite strong. The fact that they only come with an LED light socket and not a screw base makes me only give them a 3 star rating. It would be a 4 or higher if they included the ability to use almost any LED light bulb, not just those with that type of connector. They arrived well packaged and the box wasn't damaged (as many have reported) and the first two were easy to install so I'm very happy to install the rest. They will work, but I wouldn't buy them at all if I knew how cheap they are and that they don't have a screw base. I will order something else in the future.
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