This is a professionally remanufactured Epson high yield yellow (T079420) inkjet cartridge. It is an original Epson cartridge that has undergone thorough cleaning and inspection, and it has been filled with the same ink formula. The internal back pressure has been ensured, and the cartridge has been tested for performance and leakage. The original ink monitoring chip has been reset for accurate ink level tracking. We offer a 100% Quality Satisfaction Guarantee on this remanufactured T079420 high yield yellow ink cartridge.