NUINKO 2 Pack Replacement HP 564 Ink Cartridge Black CB316WN for HP PhotoSmart 5520 6520 5510 6510 5524 6525 5525 5522 Deskjet 3520 3070a OfficeJet 4620 4622 Printers Brand: NUINKO For use with HP printers: Please verify your printer model for compatibility below Easy to install NUINKO products are covered by a 100% satisfaction guarantee and a 1 year warranty from product defects 2 Black