This is a compatible Epson T3361 photo 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 photo black is a high capacity ink cartridge and contains 12ml of premium high quality ink. Printing approx. 590 pages @ 5% average coverage. Quick and easy to install, all compatible C13T33614012 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