Supricolor Replacement 934XL 935XL Ink Cartridges, High Yield 934 XL 935 XL Ink Compatible with OfficeJet Pro 6830 6820 6230 OfficeJet 6812 6815 6835 Printer 1 Set+1BK Newest Chips: The 934xl ink cartridges replacement have Newest Generation Chip, Compatible with all printers in market so far. Package Includes: 2x 934xl Black,1x 935xl Cyan, 1x 935xl Magenta, 1x 935xl Yellow(NON-OEM) Page Yield: The 935xl ink cartridges can print 1,000 pages per black cartridge & 825 pages per color cartridge Compatible with: Officejet 6220 ePrinter, Officejet 6812, Officejet 6815, Officejet 6820, Officejet 6822, Officejet 6825, Officejet Pro 6230, Officejet Pro 6830, Officejet Pro 6835 Certification: The Supricolor Ink Cartridge Replacement for 934xl 935xl has ISO9001 and ISO14001 and Rohs Certification and 1 year limited warranty.