HP 74/75 CIS ink system for Deskjet D4260 D4360, Officejet J5750 J5780 J6480, Photosmart C4280 C4285 C4385 C4480 C5250 C5280 C5500 Inks made in USA Fits HP printers with 74/75 cartridges 12-15 times more ink volume than OEM cartridges The system will last you a long time 1 year warranty