Our HP 51645A are professionally remanufactured in the US (California) to ensure the highest for your HP Deskjet 850 . Designed and manufactured by an ISO-9001 facility and match Genuine HP name-brand cartridges at a fraction of the cost. These HP Deskjet 850 Ink will provide optimal print quality and page yields. We've been selling products like compatible HP Printer Ink Cartridges for over 13 years and think you'll find great value in comparison to the high priced OEMs.