Product Information: Cartridge model:For HP 51640A 40 Color: Black Ink Type:Dye Ink Compatible printer model: For HP DeskJet 1200C 820C 850C 855C 870C Office Jet 1150 Special reminder: Please confirm that your fashioned ink cartridge model is forty or 51640A 40XL before placing an order! If you are unsure, please contact us as quickly as probable and we will recommend probably the most suitable product for you!