All the other reviewers are exactly right - the hanger right out of the box is too wide for a normal guitar. So I wrapped it in a towel and squeezed it with some channel locks. Now it's just right, and works for both my symmetrical acoustic and asymmetrical electric.
I purchased two of these - same order, same item, qty 2 - and they are not identical. One is all black as shown; one has a silver collar at the base of the tree. This doesn't bother me, but might bother some.
Both came with ugly silver screws and no wall anchors, so plan on providing your own. I got some black screws and it's a big improvement.
However, all that said, it works and the price was right.