Material: Galvanized sheet, surface painted with black texture purpose 1. It can provide heat dissipation for overclocking memory and be installed on the top fan or water-cooled heat sink 2. It can provide heat dissipation for motherboards, graphics cards, etc., and can be installed in appropriate positions as needed 3. It can install a hard drive, and when the hard drive space is insufficient, it can expand the hard drive position, supporting 2.5-inch/3.5-inch hard drives Accessories: Screws. Note: Does not include fans Packaging includes 1 * Bracket 1 set screw 1. We maintain a high level of responsibility for our customers and are as responsive as possible to the needs of our guests. 2. If you have any questions about our products, please contact us in time, we will solve it for you immediately! 3. Due to the different display devices, the color of the products may have some discrepancies, hope you can understand. 4. Due to the different photo shooting angle, the actual shape and size of the product may not be consistent with the picture, please refer to the description of the product size, everything shall be subject to the physical object received. 5. Thank you for your purchase, we sincerely wish you happy every day.