They don't last around the nominal 10 lbs without "hanging down". I had my doubts about the design when I first saw your ad but saw some good reviews so I went and bought it. Do not be fooled! They can work well with some small PC speakers weighing a few pounds, but when tasked with holding an 8-pound speaker, they just sagged no matter how tight they were on the ball. Don't waste your money on this unless you have really lightweight speakers. I'm very disappointed because I've had good luck with some other Omnimount products. The equipment that came with it was junk too! I had to go to the hardware store to buy decent mounting hardware.
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