ESTON 6 Pack Replacement 564XL ink Cartridges 5 Color 564 XL for Photosmart 6520 7520 6510 7510 B8550 C6380 D7560 C309A C410A Officejet 4620 Deskjet 3520 Package Includes : 2 Big Black + 1 Photo Black + 1 Cyan + 1 Magenta + 1 Yellow BK-550 pages / PBK- 300 pages / CMY- 750 pages ,High-capacity XL cartridge lasts longer and saves you money , is twice than the standard. For use with : Photosmart 7510 - C311a ,Photosmart 7515 - C311a ,Photosmart B8550 ,C6340 ,C6350 ,C6380 ,D5460 ,D5445 ,D7560(refer to product description) 1-Year Warranty /100% Satisfaction Guarantee,We offer a 100% money back guaranty if products are defective Manufactured with ISO9001 certified , Each ink cartridges process 100% printing test to ensure vivid and clear color image result