This is a compatible Epson T3351 black ink cartridge which has been designed to work perfectly with your Epson XP printer. Each cartridge is updated with the latest chips, guaranteed to work in your printer. The compatible Epson 33XL black is a high capacity ink cartridge and contains 22ml of premium high quality ink. Printing approx. 950 pages @ 5% average coverage. Quick and easy to install, all compatible C13T33514012 ink cartridges are ready to go out the packet for convenience. XP-530,XP-540,XP-630,XP-635,XP-640,XP-645,XP-7100,XP-830,XP-900