YoYoInk Remanufactured Ink Cartridges Replacement for HP 934 XL 934XL & 935 XL 935XL HP 6835 4 Pack (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) - With Ink Level Display Indicator Contents: HP 934XL & HP 935XL High Yield C2P23AN, C2P24AN, C2P25AN, C2P26AN, (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) 4 Pack Page Yield: 1000 pages per black cartridge & 825 pages per color cartridge 100% No Hassle Money Back Guarantee with 2 Year Warranty Printer Compatibility: Officejet 6812 6815 Pro 6230 6835 Printer