This is a very fine product. I am not very handy, but was able to install all five mounts and speakers in under an hour and a half.
The mounts themselves work as advertised, providing two planes of adjustment (left/right and up/down tilt) after the speakers have been attached. The mounts must be shortened for wall attachment and may be shortened for ceiling attachment, but the shortening is easily accomplished using the Allen wrench that is provided.
Note that unlike the other two rocket scientists who reviewed these mounts, I mounted speakers that were within the mounts' 2.5 pound weight capacity. If your speakers weigh more the 2.5 pounds, choose a different mount.
I highly recommend these mounts and the price makes them even more attractive.
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