High-yield toner cartridge delivers optimum text and graphics print quality in your Hewlett-Packard LaserJet Printers P4015n, P4015dn, P4015tn, P4015x, P4515n, P4515tn and P4515x. Proprietary automated equipment and ASTM testing methods ensure superior performance from each and every cartridge produced. State-of-the-art, automated filling equipment ensures precise fill weights for each cartridge. Independent testing has verified that this cartridge functions fully until end-of-life while yielding the same or more pages than OEM cartridges. Cartridge yields approximately 24,000 pages.