Product: FLYINK 10 Pack Compatible 564XL Ink Cartridges Replacement for HP 564 ink cartridges ( NON-OEM ) Package Included: 4x Black 564XL 2x Cyan 564XL 2x Magenta 564XL 2x Yellow 564XL High Page Yield: More than 550 pages per Black 564XL cartridge 750 pages per Color 564XL cartridge ,based on 5% coverage on A4 paper as standard. Compatible HP Printer Models: HP Photosmart 5520 6520 7520 5510 6510 Photosmart 7510 5514 5515 7515 6515 7525 Photosmart 5525 C6380 C6350 D5460 D7560 B8550 Photosmart Premium C309A C410 C310A Officejet 4620 Deskjet 3520 3521 3522 Why choose FLYINK: 1. High quality ink: The ink particles less than 20nm, print smooth, display true colors,and provide you extreme clear output. 2. Strict quality control: All products go through a series of strict quality inspections before shipping. 3. Greent print: Factory With ISO9001 and ISO14001 Certificate Approved, all products certified by REACH,STMC,CE and ROHS. Warm Tips: 1. Plesae comfirm your printer model before placing order.. 2. Please avoid touching the chips. 3.If the inks do not recognize your printer at the first time ,please take them off and install again. 4. Any question, please feel free to contact us directly via Amazon, we will be here to reply you soon.