Office World Replacement for HP 934XL 935XL Ink Cartridge(1 Black 1 Cyan 1 Magenta 1 Yellow),Compatible with HP officejet pro 6830 6835 6230 6815 6812 printers The Latest Updated Version. Affordable,work with ALL new printers. Show Accurate Ink Levels.Large ink volume,High quality ink. Contents: HP 934XL 935XL Ink Cartridge(1 Black, 1 Cyan, 1 Magenta, 1 Yellow) 4 Pack Compatible with: HP OfficeJet Pro 6820 HP OfficeJet Pro 6830 OfficeJet Pro 6230 OfficeJet 6812 OfficeJet 6815 OfficeJet 6835 Printer. Any Questions,please find your order and click 'Contact Seller',send us Email.