The Aos 21 Black + Aos 22 Tri-Color Ink Cartridge is a comprehensive and compatible ink solution designed for use with a wide range of HP printers. Specifically, it is suitable for the following HP printer models: HP Deskjet: 3910, 3920, 3930, 3940, D1311, D1320, D1330, D1341, D1360, D1420, D1430, D1445, D1455, D1460, D1468, D1520, D1530, D1560, D2330, D2345, D2360, D2430, D2445, D2460, D2468 HP Deskjet Ink Advantage: F2110, F2120, F2140, F2180, F2185, F2187, F2210, F2212, F2235, F2240, F2250, F2275, F2280, F2290, F325, F335, F340, F350, F370, F375, F380, F390, F394, F4135, F4140, F4150, F4172, F4175, F4180, F4185, F4190, F4194 HP Officejet: 4315, J3680 HP PSC: 1410 This combo pack includes the Aos 21 Black Ink Cartridge for sharp and clear text documents and the Aos 22 Tri-Color Ink Cartridge for vibrant and true-to-life color printing. Whether you need to print professional documents, school projects, or photos, this combo cartridge pack ensures reliable performance and high-quality prints. Installation of the Aos 21 Black + Aos 22 Tri-Color Ink Cartridge is straightforward, allowing for easy replacement and minimal downtime. The advanced ink formulations in both cartridges promote smooth ink flow, prevent clogging, and ensure consistent, reliable printing without smudges or streaks. This reliability makes the Aos 21 and Aos 22 combo cartridges suitable for both occasional printing needs and tasks requiring continuous high-quality output. In addition to its performance benefits, the Aos 21 Black + Aos 22 Tri-Color Ink Cartridge offers cost-effective printing solutions without compromising on quality. Manufactured with high-quality materials and subjected to rigorous quality control processes, these cartridges deliver durability and consistent performance over their lifespan. Overall, the Aos 21 Black + Aos 22 Tri-Color Ink Cartridge combo pack is an excellent choice for users of the listed HP printer models who prioritize reliable performance, high-quality prints, and cost efficiency. Whether for professional use or personal projects, this combo pack ensures ease of use and dependable results, making it a valuable addition to any printing setup.