This is a professionally remanufactured Epson T078420 yellow ink cartridge. It is an original Epson cartridge that has undergone a thorough cleaning and inspection process, ensuring it meets high-quality standards. The cartridge is filled with the same ink formula and features a reset ink monitoring chip for accurate tracking. This remanufactured ink cartridge delivers a standard yield of up to 515 pages and is backed by our 100% Quality Satisfaction Guarantee.