I bought these mounts with a lot of concern since they're cheap, but after mounting them with my small, i repeat very small satellite speakers, I am very satisfied with their performance. I have samsung speakers from a home theatre in a box and the components that same with these mounts were more than sufficient to mount them with a single screw. I ended up choosing to wall-mount them because of my stud locations, but these would have easily mounted on my ceiling as well. The only downside I felt was that the mounts used screws for connecting to the speaker and surface, but used hexagon screws for its extensions and pivots. This is an inferior way of producing pivot points in m opinion. All in all, I feel these are a success.