Features: brand new and high quality Pull-out guide rail tool.Easy to install and use. Fully for 2.5-inch fixed hard disk SSD/3.5-inch mechanical hard disk. Applicable models: SSD hard drive, 3.5-inch mechanical hard drive. 2.5 inch laptop hard drive To enhance the use of optical drive space value. Good heat dissipation, durable structure, strong compatibility, large capacity. Specifications: Name: Hard Disk Shelf Applicable models: SSD hard drive, 3.5-inch mechanical hard drive. 2.5 inch laptop hard drive Colour: Black Material: Plastic Size: approx 150x111x95mm/5.91x4.37x3.74in Weight: 50g Package Includes: 1 x Hard Drive Conversion Rack 1 x Screws Pack note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.