Speedy Inks - 4pk Remanufactured Replacement for HP 940XL C4906AN High-Yield Ink Cartridge Black For use in Hewlett Packard: OfficeJet Pro 8000, OfficeJet Pro 8500, OfficeJet Pro 8500 Wireless, OfficeJet Pro 8500a, OfficeJet Pro 8500a Plus, OfficeJet Pro 8500A Premium Page Yield: 2,200* | *Average cartridge page yield in accordance with ISO IEC 24711 Color: Black | Shelf Life: 12-18 Months The use of aftermarket replacement cartridges and supplies does not void your printer's warranty