Designed with heavy business printing in mind, this extra-large, easy-to-install ink cartridge offers up to 50 percent lower cost per page than color laser printers. Instant dry ink enables fast duplex printing & great productivity. Epson's revolutionary, DURABrite Ultra Ink produces smudge-resistant, fade-resistant & water-resistant prints that look brilliant on both plain & glossy photo paper. Ink cartridge is designed for use with Epson WorkForce Pro WP-4520, WP-4533, WP-4590 Network Multifunction Printers; WorkForce Pro WP-4530, WP-4540 All-in-One Printers; WorkForce Pro WP-4020; & WorkForce Pro WP-4010, WP-4023 & WP-4090 Network Printers. Cartridge yields approximately 1,200 pages.