They are very difficult to install and the quality is very poor. They were too weak to hold my Kenwood surround speakers and very difficult to install. On my first try, I attached the brackets to the bottom of my speakers, the plastic brackets immediately buckled and the speakers dangled where I wanted to place them. On my second try I attached the bracket to the top of the speakers and the bracket held but wasn't strong at all, also the labels on the speakers were reversed. The biggest issue, aside from being flimsy, was the mount's design. You have to disassemble them completely to install the two halves and then try to install the screw through the top of the first half into the nut in the bottom half which should hold with one hand try to put the speaker, screw and screwdriver in the to hold other hand. When you buy them use masking tape to secure the nut and make sure the speaker mounting screw is on the top of the speakers and finally the speakers are very light.
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