The product is a genuine #11 printhead compatible with various HP printers such as the Business InkJet 1100, DesignJet 500, and OfficeJet series. Specifically designed for black printing, this printhead is suitable for use with models including OfficeJet 9110, 9120, 9130, and DesignJet Copier CC800PS. With a focus on providing high-quality results, this product ensures compatibility with a range of printer models for efficient and reliable printing performance.