10 pack of Compaq StorageWorks DDS-4 20/40GB Data & 4mm Cleaning Cartridge. I opened one of the tapes, but it was not used. The remaining 9 are factory sealed, along with the cleaning cartridge. This listing is for all 10 data tapes & the cleaning cartridge.The Compaq StorageWorks DDS-4 20/40GB Data & 4mm Cleaning Cartridge is a high-quality data storage solution designed for use with DDS-4 drives. This cartridge offers a capacity of 20/40GB, making it ideal for storing large amounts of data. The included 4mm cleaning cartridge ensures that your drive remains in optimal condition for efficient data storage. Packaged in a standard jewel case, this Compaq StorageWorks product is a reliable choice for those in need of a dependable storage solution.