Bought these lights for the attic. I also bought new keyless lamp holders as it was a new design. Little did I know these lights also come with a mounting plate and a socket that you can plug them into if you wish. I decided to just install them like regular bulbs since I already had keyless bulbs. There is a light about every 6 feet which provides more than enough light for that space. They're plastic, I haven't dropped them, but they don't seem to break easily. I would recommend.