Features: Enhances PC with Chassis Hard Drive Mounting Rails, for secure and stable installation of 2.5" and 3.5" hard drive in most standard case. from high strength plastic, these rails offer durability and corrosion resistance, ensuring long performances while minimizing vibration and noise during operations. for enthusiasts and PC builders, these mounting rails provide solution for anyone lookings to their computer storage configuration. for home or office, these rails facilitate easy installation and replacement of hard drive, allowing users to efficiently manage their data storage needs. With open for improved heat dissipation, these rails not only support traditional HDDs but also accommodate SSD, enhancing overall systems flexibility and thermals management. Specifications: Materials: Plastic Size:13.5x1.5x0.50cm/5.31x0.59inch Package Includes: 1Pair Hard Drive Rails note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!