Check the listing for details. 20PCS Fan Shock Absorbing Rubber Nail Long Computer Hardware Cooling Fan White. Condition: New. Listed at 13.59 USD. What is this?PC fan mount radiator shockproof rubber screws are widely used for chassis fans, CPU radiator fans, graphics card cooling fans, power supply cooling fans, and hard drive cooling fans, reducing vibration and noise.What will I get?Length: 66mm/2.6 inchHead Diameter: 8mm/0.31 inchSlot Width: 24mm/0.94 inchColor: WhiteMaterial: Silicone RubberStyle: Shock Absorbing Rubber NailsIn the package of: 20PCS x ScrewsAre there any advantages of the product?Made of silicone rubber, great flexibility, is ultra-soft, aging resistant, and has a long service time to use. It can reduce the vibration transmitted by the fan to the chassis or other components, thereby reducing noise and vibration and improving system stability.