10 DS/DD Brand New "Double density" or "Low density" 3.5 inch floppy disks.   Formatted at 720K.

You will get a pack of 10 disks.  

These disks are the rare floppies that are commonly used in embroidery machines, machine tools, pianos, etc.  This type of disk is sometimes described as 1MB or 800K floppy diskettes.  Sometimes called MF-2DD or 2DD.