The Genuine High Capacity Black Epson 378XL Ink Cartridge delivers the sharpest black print for longer with its 500-page duty cycle and impressive cost per page when using A4 sheets. If you need a workhorse cartridge to support the printing of business documents or any other heavy text-based workload, the Genuine High Capacity Black Epson 378XL Ink Cartridge C13T37914010 will not disappoint. It has a substantial 11. 2ml capacity to keep your device running every day.