This is not an OEM original brand. These are Premium Remanufactured Re-Used Cartridges. Remanufactured ink cartridge is designed for use with Dell 720, 920; Lexmark X75, X1150, X1185, X1250, X2250, Z13, Z23, Z25, Z33, Z35, Z515, Z605, Z611, Z615, Z617, Z640, Z645, Z647; and Sharp UX-A-1000/E, UX-B20 and UX-B700/E. Premium-grade ink produces crisp, bold text and graphics. Cartridge yields approximately 335 pages. Elite Image is ISO certified.