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.