The Genuine HP 27 28 Combo-Pack Black & Tri-color Ink Cartridges are original products from HP designed for use with HP printers. The cartridges are compatible with specific HP models, ensuring high-quality prints with vibrant colors. The combo-pack includes both black and tri-color cartridges, making it convenient for users to have both colors on hand for their printing needs. With genuine HP print technology, these cartridges provide reliable and consistent performance, making them a dependable choice for both home and office printing requirements.