Product Name: 934 and 935 ink cartridges for hp printers (BCMY, 4 Pack)Advantages of 934 935 ink cartridges from ECHALLENGE: High quality: Our compatible 934xl 935xl ink for hp officejet pro 6830 ink cartridges provides you with clear high printing quality. High yield, more pages ink 934xl 935xl combo pack is large volume and can print more pagesCompatible Printers: Compatible with HP OfficeJet Pro 6230 6830 6835 6836, OfficeJet 6220, 6800, 6812, 6815, 6820, 6822, 6825 Printers