Review on 🔵 Noctua NA-SAV2 chromax.Blue: Enhance Performance with Silicone Anti-Vibration Fan Mount Set (20-Pack, Blue) by Kirt Phillips

They are easier and quicker to install than screws. Just make sure they are compatible with your fans as they only attach in one place. Hold very safe. Even in the adjustable slots, they resist gravity and allow me to continue to customize the position of the fans in my case. If you need a flush case side for one of your fan locations, you can cut it off and still install it without tools. It's just more boring. If you cut off the side facing the fan, you'll need pliers to put it back in place.