This is a premium made in the USA remanufactured 4-pack inkjet cartridges for the HP 950XL / 951XL High Yield (Black / Cyan / Magenta / Yellow) (2300 yield for Black and 1500 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.