Speedy Inks Remanufactured Ink Cartridge Replacement for HP 934XL High-Yield (Black, 3-Pack) Compatible with OfficeJet 6812 OfficeJet 6815.

Compatible with: Office Jet 6812, Office Jet 6815, Office Jet Pro 6230, Office Jet Pro 6830, & Office Jet Pro 6835 Page Yield: 1,000* *Average cartridge page yield in accordance with ISO IEC 24711 Shelf Life: 12-18 Months This professionally remanufactured cartridge for HP 934XL has a 'smart chip' that makes continuous adjustments to optimize print quality and enhance reliability and cost effectiveness as well as monitor ink levels Color: Black