I bought 2 for my deck to hold hanging planters. They are heavy, sturdy and I think they will hold up to the weather. I also liked that they provided the right screws for the hooks.

wasn't aware it had to be attached to the side of something

I liked this Shepard"s hook so much, I ordered one for my daughter in Cape Cod!

Just as pictured. Heavy. Haven't installed it yet but it looks straight so it shouldn't be a problem.