JARBO Replacement for HP 934XL 935XL Ink Cartridge 1 Set+1 Black 5 Packs Used in HP OfficeJet Pro 6830 6820 6230 6812 6815 6835 Printer Easy to install and use with complete compatibility,High-quality ink, print with excellent color and crisp text Contents:5 Packs(2 Black 1 Cyan 1 Magenta 1 Yellow),up to 1000 pages per Black cartridge,up to 825 pages per Color cartridge (5% coverage) Worked in HP OfficeJet Pro 6830 6820 6230 6812 6815 6835 Printer. ISO-9001 and MSDS certificate approved. All JARBO brand products are backed by 2 years money back guarantee, which covers any quality, reliability and performance issues We strive for the perfection of printing, only for the comfort in your life.