Speedy Inks - 2PK Remanufactured Replacement for HP C3903A 03A Black Laser Toner For use in Hewlett Packard: LaserJet 5mp, LaserJet 5p, LaserJet 6mp, LaserJet 6p, LaserJet 6p se, and LaserJet 6Pxi Pack includes: 2 - C3903A Page Yield 4000* *Average printer cartridge page yield in accordance with ISO 19752 The use of aftermarket replacement cartridges and supplies does not void your printer's warranty