This is a premium, made in the USA remanufactured 4-pack inkjet cartridges for the HP 564XL (Black / Cyan / Magenta / Yellow) (550 yield for Black and 750 yield for C/M/Y). We are proud to offer this Made in the USA remanufactured product as our premium offering to replace your HP inkjet cartridge, offering you equivalent quality at a steeply discounted price.