Speedy Inks Remanufactured Toner Cartridge Replacements for HP 649X CE260X High Yield (Black, 3-Pack) Page Yield: 17, 000* | *Average printer cartridge page yield in accordance with ISO 19752 | Pack of 3 For use in Color LaserJet Enterprise CP4525dn, Color LaserJet Enterprise CP4525n, and Color LaserJet Enterprise CP4525xh Shelf Life: 24-36 Months The use of aftermarket replacement cartridges and supplies does not void your printer's warranty