Valuetoner HP officejet pro 6830, Remanufactured Ink Cartridges for HP 934 935 934XL 935XL for Officejet 6220 6230 6812 6815 6835 6820 Printer, 4 Pack (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) Contents: HP 934XL & HP 935XL High Yield C2P23AN C2P24AN C2P25AN C2P26AN (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) 4 Pack Color: Black, Cyan, Magenta, Yellow Page Yield: 1000 pages per black cartridge & 825 pages per color cartridge Printer Compatibility: Officejet 6812 6815 Pro 6230 6830 6835 Printer Warranty: 1 year limited warranty