Genuine HP c8728ae tri-colour ink cartridge (no 28) 8 ml for use in the HP deskjet 3320, 3325, 3420, 3425, 3520, 3535, 3550 & 3650. HP psc 1110, 1200 series including 1205, 1210 & 1215 . HP OfficeJet 4110.