They are solid aluminum. The ground stake is threaded so once it's set it does not move or get knocked over or lean. The only comment is that these are pathway lights so they are a lot brighter than I expected. I had to cut back on the flowerbed accents or it would be like the sun never went down.lol. Where I once had 6 lights, I now use 2. Guess it could save you money.Other than that, a great value and I will use them in my front yard soon.
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