This is a professionally remanufactured Epson T559520 Light Cyan inkjet cartridge. It is an original Epson cartridge that has undergone a thorough cleaning process and has been filled with the same ink formula. The internal back pressure has been ensured, and the cartridge has been tested for leaks and functionality. The ink monitoring chip has been reset for accurate ink level tracking. We offer a 100% Quality Satisfaction Guarantee on our remanufactured T559520 Light Cyan ink cartridge.