Hard drive mounting screw is made of high quality material, high durability, not easy to damage, and has good mute and damping effect. | The mute mounting screw for the isolation grommet applies only to 3.5-inch disks. It cannot be used for 2.5-inch disks. Purchase the screw based on the specific dimensions. | Hard drive mounting screw overall fine workmanship, is our computer assembly in the practical small objects, greatly improve the use of experience. | Hard drive mounting screw are easy to install. Each hard disk requires at least four silent screws to secure it to the chassis. | The hard drive mounting screw is compatible with DC7800 DC7900 Elite 8000,8100, 8300, and Pro 6000. Please check the model before purchasing to avoid errors.