ZR-Printing 10 Pack 564 Compatible Ink Cartridge Replacement for HP 564XL 564 XL (4 Black, 2 Cyan, 2 Magenta, 2 Yellow) for HP DeskJet 3520 3522 Officejet 4620 Photosmart 5520 6510 6515 6520 7520 7525 100% compatible replacement for HP 564 564XL ink cartridge, with hiagh quality chip. This is not OEM,and all cartridges contain high quality ink that is engineered to produce superb results. The diameter of the particle is within 20 nanometers, which makes a clear printing, great liquidity and prevents any printing head clogged Page High Yield: Up to 800 Pages per HP 564XL Large Black cartridge, 750 Pages per HP 564XL Color cartridge Contains: 10 Packs ZR 564 XL Ink compatible for HP 564XL Ink Cartridges (4 Black, 0 Photo Black, 2 Cyan, 2 Magenta, 2 Yellow) Printer Compatibility: HP Deskjet 3520 3521 3522 3526 HP Officejet 4610 4620 4622 HP Photosmart: 5510 5512 5514 5515 5520 5525 6510 6512 6515 6520 6525 7510 7515 7520 7525 B8550 C6340 C6350 D7560 C510 B209 B210 C309 C310 C410 C510 If you have any questions, please contact us: your Amazon buyer account &gt; click on your account &gt; your order &gt; find the order and click to contact the seller