The HP 934 Black and HP 935 Cyan, Magenta & Yellow Ink Cartridge offers crisp, high-quality  images that resists fading and stand out. These cartridges deliver consistent results that dry fast, resist water and get noticed. These HP cartridges are compatible with the HP OfficeJet Pro 6830 e-All-in-One and HP OfficeJet Pro 6230 printers. What's Included : HP 934 Black - approx. 400 pages yield @ 5% coverage HP 935 Cyan - approx. 400 pages yield @ 5% coverage HP 935 Magenta - approx. 400 pages yield @ 5% coverage HP 935 Yellow - approx. 400 pages yield @ 5% coverage Compatible printers HP OfficeJet Pro 6830 e-All-in-One HP OfficeJet Pro 6230 Printer