100% Compatibility: Designed for seamless performance with your printer. Our cartridges are flawlessly compatible with Epson Workforce Pro WF-4720, Workforce Pro WF-4730, Workforce Pro WF-4734, Workforce Pro WF-4740, WorkForce Pro EC-4040, WorkForce Pro EC-4030, WorkForce Pro EC-4020 Printer models. Our cartridges integrate effortlessly with your printer for smooth, trouble-free printing.