The rubber Screws use elastic rubber Screws to slow down the vibration generated in the operation of the fan and isolate the resonance of the chassis, so that it has the effect of reducing noise! The product uses anti-aging process to ensure it will not age after long-term use at high temperature. That the anti-vibration Screws adopt rubber mount to absorb vibration is another solution to further reduce the overall noise of the system in addition to the use of silent fan! Good toughness, soft handle, not easy to break, good workmanship. Package includes: 16* XDX-7145 Screws