10 Pack ink4work Replacement HY Ink Cartridge for HP 934XL 935XL OfficeJet 6812, 6815, officeJet Pro 6230, 6830, 6835 (4 x Black, 2 x Cyan, 2 x Magenta, 2 x Yellow) For use with: OfficeJet 6812, 6815, officeJet Pro 6230, 6830, 6835 ISO9001 certified. Not made by HP Content: 4 x Black, 2 x Cyan, 2 x Magenta, 2 x Yellow Ink cartridge Sold by ink4work only