The product is a set of 6 ONN 564XL HP black printer ink cartridges with an expiration date of October 2024 to June 2025. These cartridges are compatible with various HP printer models such as Photosmart 7520, Photosmart 7510, and B8553. They are inkjet print technology compatible units suitable for printing in black color. The cartridges are sold individually and are a reliable choice for those looking to replenish their printer ink supply with high-quality, compatible cartridges.