Very strong and sturdy. But as mentioned in other reviews, their length varies slightly. But if you drill your own holes for the shelf this shouldn't be a problem, just drill a little deeper! But if you're trying to hang the shelf on the wall, you'll need to use more than one bracket. A whole different story! It is very difficult to like everything and align the shelf. It takes a while, but you can do it! Rschunimagu
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