HQ Supplies Remanufactured Toner Cartridge Replacement for HP 503A ( Black,Cyan,Magenta,Yellow , 4-Pack ) Best Real Savings Option for Corporations, Educational Institutions, Organizations, and Businesses in printing Business (Tax Preparation, Illustration, School related, legal documents, any paperworks, etc...) Level High Quality Printing. Buy with confidence this High Quality Premium Replacement for your expensive HP Business Printers. Toner Cartridges are manufactured using genuine polymerized toner and genuine compatible chip which enable your printer accept cartridges as "Genuine HP Supply" and print high quality printouts. These cartridges were manufactured with a new robust techniques without drilling a Genuine HP Cartridges. Clear, sharp and consistently accurate color results. Page Yield: Each cartridge yields 6,000 pages at 5% coverage Compatible Hardware: HP Color LaserJet 3800 3800dn 3800n 3800dtn CP3505n CP3505dn CP3505x Printers