Function: reduce noise and stress on your PC desktop systemThis Fan Mounts fit FLANGE TYPE fan moldingsUniversal design: fits most fanQuick and easy to fit1.rubber screws for open corner cooling fan. We use premium materials so these rubber screws are softer and offer better noise and vibration dampening.2.compatible to mounting hole sized at 4.3 to 4.8mm diameter, extremely convenient for mounting and unmounting cooling fans, also great for reducing noise and vibration caused by cooling fans.3.Be aware of cheap imitators that use inferior materials and are very hard to work with.color: blackMaterial: RubberPackage Contents:32* Rubber Anti Vibration Mount Screw Pin RivetOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.