Dual application Various kinds of 2. 5? hard drives are supported to be adapted to 3. 5? hard drives that fit slots in ATX cases. It's an easy way to utilize idle hard drives for additional system storage. You can either mount one single 2. 5? hard drive or two 2. 5? hard drives at the same time. The dual application will satisfy your various needs.. flexible installation side wings are designed to be detachable for more space in operation. When two hard drives are to be mounted, side wings can be of use to fix the second hard drive. Flexible design for quick and easy installation.. all tools available besides the bracket, a 4 pin to dual 15 pin SATA power cable and a 15 pin to dual 15 pin SATA power cable are included. Two 6Gbps SATA cable and one screw driver and 16 screws are also packaged. A complete set of tools is prepared to expedite your installation. more functions screw holes are also placed at the bottom of the bracket to support installation from the bottom, rendering the bracket more steady. There are hollow parts on the bottom and side wings to expedite heat dissipation. Parameters: Dimensions: 138*100*21mm weight: 91. 8G Material: iron Color: Black Specifications: One hard drive or two 2. 5? hard drives(under 9. 5mm) compatibility PC case: 2. 5? hard drives, fits most ATX cases and other PC cases.