Premium Quality 51641A Tri-Color Inkjet Cartridge compatible with the HP Color Copier 100, 110, 120, Deskjet 1000, 1100, 820, 850, 855, 870, Deskwriter 1600c, Digital Copier 110, 120, OfficeJet Pro 1150. The use of compatible supplies does not void your printer warranty. Product Detail Ninestartechonline.com