The t1626 series are standard capacity epson pen and crossword inks designed specifically for the epson workforce inkjet printers and ideal for occasional printer users this epson t1621 black printer ink cartridge has a page yield of approximately 175 pages duty cycle approx 175 pages 5 average coverage colour black compatible with epson wf2010w inkjet printer epson wf2510wf inkjet printer epson wf2520nf inkjet printer epson wf2530wf inkjet printer epson wf2540wf inkjet printer