Cartridge World Remanufactured Ink Cartridge Replacement for HP 21 (Black) Remanufactured IN THE USA . This cartridge was tested in State-of-the-Art facilities prior to packaging to ensure print quality. 100% SATISFACTION GUARANTEE Replacement for HP 21 (Black) (OEM #C9351AN). Includes FREE recycling program courtesy of Waste Management-return bag or postage paid label to insure recycling of empty ink cartridges Color: Black - INK engineered specifically for your cartridge Page Yield equal to or greater than OEM: approximately 190 pages - WHY PAY MORE TO PRINT? Compatible with these printers: HP DESKJET 3910, 3930, 3940, D1445, D1455, D1560, D2330, D2360, D2430, D2445, D2460, F4140, F4180; FAX 1250, 3180; OFFICEJET 4315; PSC 1410, 1417, 1410V. DOES NOT AFFECT PRINTER WARRANTY.