Features: Physically protect the hard disk, and use the mobile connection-method to realize the function of the mobile hard disk. The aluminum-alloy shells increases the heat dissipation area, which facilitates the heat dissipation of the hard disk during work and increases the-life of the hard disk. Tool free, Easy to use, no need to drive. Compatibly support M.2 NVME SSD: 2230. Excellent heat dissipation effect, and accurately guides the heat to the enclosure shells to dissipate heat. Specifications: Material:Aluminium-Alloy Size: Approx.9.4x4x1.07cm/3.7x1.57x6.69inch Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x SSD Case