NOTE: THE REMANUFACTURED T603700 LIGHT BLACK INK CARTRIDGE DOES NOT CURRENTLY WORK IN THE FOLLOWING PRINTER MODELS: Epson Stylus Pro 7800, 7800 Professional Edition, 9800, 9800 Professional Edition. We will update this message once we receive new inventory that works in these printer models.Our remanufactured replacement for T603700 (T6037) high capacity light black 220ml inkjet cartridges are manufactured to deliver optimal performance and high quality printouts at a fraction of the cost of the Epson OEM T603700 ink-jet cartridges. We offer a 100% Quality Satisfaction Guarantee on our remanufactured replacements for T603700. We guarantee that you will be satisfied with the high quality print outs of our remanufactured replacement for the T603700 (T6037) ink jet cartridges. Why pay double for a T603700 brand name ink cartridge? Save 75% Compared to MSRP on the replacement for Epson T603700. Also replaces T563700 and lower yield T602700 cartridges.