Dolica HD-C100K 2.5" Hard Drive Case (Blue) Dolica HD-C100 series Hard Drive case Internal Dimesnsion (LxWxH): 3.5" x 0.6" x 5.1" Compatible with most 2.5" portable hard drives Easy access front pocket allows you to store cord and accessories. Durable Nylon construction protect your portable hard drive from daily use.