They work exactly as you would expect. They keep the fans quiet and eliminate the need to tap the threads in the fan mounting tabs or in the computer case. They are pretty soft and pretty easy to install. Just make sure to insert the thick part into the fan tube and the thin part into the side of the computer case. If the bolt won't go through the fan mount or through the case, gently pull it in a circular motion to trick the thick end, and if that doesn't work, use some window cleaner to lubricate the bolt. hairpin
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