This is a compatible HP CF503X toner cartridge guaranteed to perform with HP Laser Printers. It replaces the genuine (OEM) HP CF503X toner cartridge. This toner cartridge is made with top quality components and new toner to give you the highest quality printouts every time. This compatible for HP CF503X toner cartridge is specially engineered to meet or exceed the highest standards of quality reliability and page yields. Although this cartridge is not made or endorsed by HP it offers customers an economical alternative to expensive OEM HP CF503X cartridges and comes with our satisfaction guarantee.