The T6441 Genuine Epson Black is a dye-based ink specially formulated to deliver outstanding depth and darkness when used in Epson Ink Tank printers. As with all Epson Original Ink Refills, the T6641 offers worry-free use and ensures the longevity of your printer’s life. Ideal for document printing, an Epson Black refill ink bottle can print up to 6,000 or 4,500 pages, when used with the Epson M and L series printers respectively.