Speedy Inks - 2PK Compatible Replacement for HP 64X / HP64X / CC364X HY Black Laser Toner Cartridge For use in HP: LaserJet P4015dn, LaserJet P4015n, LaserJet P4015tn, LaserJet P4015x, LaserJet P4515n, LaserJet P4515tn, & LaserJet P4515x Page Yield: 24,000* *Average printer cartridge page yield in accordance with ISO 19752 Color: Black | Pack of 2 Shelf Life: 24-36 Months The use of aftermarket replacement cartridges and supplies does not void your printer's warranty