A 5-pack of 230MB Windows-formatted MO disks. These were purchased new a long time ago and have been stored at home unused for many years. They are unopened and unused, but please understand that they are quite old. Thank you for your consideration. - Brand: MITSUBISHI - Capacity: 230MB - Pack Quantity: 5 packs - Format: Windows format - Country of Manufacture: Japan Thank you for looking.