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, X2250, Z13, Z23, Z25, Z33, Z35, Z515, Z517, Z605, Z611, Z615, Z617, Z640, Z645, and Z647. Tricolor cartridge gives you excellent print results with an ultrasonic cleaning, inspection before the refill process, and 100 percent print testing before shipment. Cartridge yields approximately 275 pages. Elite Image is ISO certified.