Formulated with fast-drying pigment ink designed for high-speed print jobs, DURABrite Ultra standard-capacity ink cartridges deliver sharp text, bright colors and print-shop-quality results. Epson printing systems are designed to be used exclusively with Epson Genuine Cartridges. Use of non-genuine ink could cause damage not covered under the printer's limited warranty. This standard-capacity ink cartridge is compatible with Epson WorkForce EC-C7000 Color Multifunction Printer; and WorkForce Pro WF-7310, WF-7820, WF-7840 Wireless Wide-format All-in-One Printers.