Description: Computer Case Shockproof Screws Shockproof Screws + Shock Absorption 3.5-inch HDD Shock Absorption Screws Hard disk damping screw 3.5 Thick tooth step screw rubber ring to reduce hard disk vibration fixing screw Desktop 3.5-inch hard disk use, need chassis support, Part of the power supply can also be used, but not the laptop Specifications: Color:Black Products include:20PCS size: Cap diameter: 10.30MM Thread diameter: 3.4MM Unthreaded polished rod part diameter: 4.53MM Total length: 11.3MM Cap thickness: 1.47MM Polished rod length: 4.83MM Thread length: 5MM Package Includes: 20 PCS Screw