The product is a set of 10 TDK 5.25" M2D double-sided double-density mini-floppy disks, factory sealed and unused. These disks are designed for use with computer systems that require M2D formatted floppies, offering high density storage capacity for smaller files or larger amounts of data. The TDK brand is known for its quality assurance and reliability in the storage media industry, making these disks a dependable choice for storing and accessing data on vintage computer systems that require 5.25" floppies.