[Features] easy to use [product information] 5. 25 to 3. 5 hard drive adapter 5. 25 to 2. 5 hard drive adapter 3. 5 2. 5 hdd adapter SSD hard drive adapter hard disc adapter PC cooling fan mounting bracket 5. 25 hard drive mounting bracket hard drive case adapter 5. 25 inch to 3. 5 inch: support a 3. 5- inch ( or 2. 5- inch or SSD ) hard disk and a 12cm fan installed at the same time. 5.25 inch SSD mounting bracket: after connecting, users have flexibility in installation. Hard drive mounting kit: this bracket is compatible with 3.5 inch and 2.5 inch SSD and hdd. Mounting bracket 5.25 inch: this three- desktop chassis rack can convert 5. 25- inch optical drive bays into 2. 5- inch hard drive bays, SSD hard drive bays, 3. 5- inch hard drive bays, and 12cm fan bays. Name:Hard Disk Rack Packing list (you can get after purchasing one item): 2*Hard Disk Rack and Accessories Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.