4 Pack ink4work 934XL 935XL Replacement HY Ink Cartridge for use with HP OfficeJet 6812, 6815, officeJet Pro 6230, 6830, 6835 (1 x Black, 1 x Cyan, 1 x Yellow, 1 x Magenta) For use with: OfficeJet 6812, 6815, officeJet Pro 6230, 6830, 6835 ISO9001 certified. Not made by HP Content: 1 x Black, 1 x Cyan, 1 x Magenta, 1 x Yellow Ink cartridge Sold by ink4work only