This listing is for a set of Sony 2HD 2DD floppy diskettes, IBM 20 Pack total, that come with cases. The disks are recordable and have a capacity of 1mb. They are compatible with 3.5" disk drives and come in a sleeve packaging type. The unit type is a unit, and the brand is Sony. The disks are made in the United States, and the category is Computers/Tablets & Networking, Drives, Storage & Blank Media, Blank Media & Accessories, Floppy, Zip & Jaz Disks.