for 3.5 inch Disks: Designed exclusively for 3.5-inch hard drives, these mounting screws a . Please note these screws are not suitable for 2.5-inch hard drives. Vibration Isolation and Sound Damping: These hard drive mounting screws are designed to mute the noise produced by the hard drive and provide shock absorption. The rubber grommet reduces vibrations, ensuring a smoother and quieter operation. High Compatibility for Machines: These 3.5-inch hard drive mounting screws are compatible with several for 3.5inch HDD DC5800 DC7800 DC7900 6005 6200 6300 Z200 6000 8000 8100 8200 8300 Z40010720 Z400101020 Z4001072010 Best Installation Process: To install a 3.5 inch hard drive, use the four included black and blue M3 isolation mounting guide screws. Two screws should be installed on each side of for best balance and support. Comprehensive Set: The package includes 12 pieces of 3.5-inch hard drive mounting screws along with washers. Having a few extra screws on hand could a trip to the .<br><br>Colour:As Shown Material:iron<br><br>Package Contents: 12 * 3.5inch Hard Drive Screws<br><br>Only the above package content, other products are not included. Note: Light reflection 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.