myCartridge 4 Pack Compatible HP 934 935 934XL 935XL Ink Cartridge (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) for use in Officejet 6812 6815 Pro 6230 6830 ( with New Chip) Contents: Compatible HP 934XL & HP 935XL High Yield C2P23AN C2P24AN C2P25AN C2P26AN (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) 4 Pack Page Yield: 1300 pages per black cartridge; 1000 pages per color cartridge (5% coverage) New Generation Chips Worked for All Hardware Version Cartridges SHOW ACCURATE ink levels! Compatible with Officejet Pro 6230 6835 6830 HP Officejet 6220 6820 6815 6810 6812 ISO9001 and CE certificate approved, 100% satisfaction guarantee.