This is a bulk lot of quantity 20 (twenty) used, tested good Western Digital Blue WD10EZEX 1TB 3.5" SATA HDDs.
These used hard disk drives have been fully and professionally tested and found in good working order; SMART reporting statistics show low to moderate hours, no bad or reallocated sectors, or other signs of failure.
As with all data storage products, you are solely responsible for making proper backups - seller assumes absolutely no responsibility for data loss or damages.