[What you Get] The PC hardware kit contains 20pcs soft rubber reducing noise anti-vibration screws, 50pcs silver and 50 pcs black computer case Phillips flat head screws, 40pcs black long flat head computer cooling fan screws, totally 160pcs. Fits most open cases fan sizes and PC cases. [Size Information] ? CPU Fan Mounting Pin Rivet measures 65mm / 2.56"; ?black and silver computer case fan screws measures 5*10KB/M5*10mm; ? Long Water Cooling Screw measures 6-32*30, 3cm long. [Premium Material] The PC Computer Case Cooling Fan Mount Screws are made of premium carbon steel for rust and corrosion resistance, durability. The silicone computer fixing screws are made of durable silicone rubber for great flexibility, aging resistance, long service time. [Great Function] The case fan mounting screws reduces case resonance caused by fan vibration and reduces noise when installing PC case fans. Ideal for reducing fan noise and dampening vibration between the fan and the PC case eliminates vibration and helps reduce stress. [PC Replacement Hardware] Easy for for mounting and unmounting. Widely applies in PC case, power supply, motherboard, hard drives, fan and floppy/CD-ROM/DVD-ROM drives fixed installation.