HOTCOLOR Remanufactured Ink Cartridge Replacement for HP 934XL HP 935XL Work for Officejet 6812 6815 Pro 6230 6830 6835 Printer (Black, Cyan, Magenta, Yellow, 5-Pack) 1. Page Yield: 934XL Black Up to 1000 pages , 935XL Color (Cyan Magenta Yellow) Up to 825 Pages per cartridge . 2.What's in the box: 934XL 2 Black Ink Cartridge (C2P23AN); 935XL 1 Cyan 1 Magenta 1 Yellow Ink Cartridge (C2P24AN, C2P25AN, C2P26AN) 3. 934XL 935XL Ink Cartridges work with: HP Officejet 6812, 6815. HP Officejet Pro 6230, 6830, 6835 Printer 4. Type: Work as HP 934XL High Yield Black and HP 935XL High Yield Cyan/Magenta/Yellow Ink Cartridge ; Remanufactured by HOTCOLOR (ISO 9001 certified facility) ;NOT Made by HP. 5. Guarantee: 120 days quality warranty.If there is any problem,DO NOT hesitate to contact us.