Includes: Remanufactured Compatible Toner Cartridge Replacements (Black, 3-Pack) Page Yield* - Black (approx): 8500 pages at 5% Coverage (Letter /A4) For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. *Average cartridge Page Yield* in accordance with ISO IEC 2471. *at 5% coverage (ISO/IEC standard) Compatible Printers Color Laserjet: CP4025 CP4525 CP4025n CP4525dn CM4540fskm CM4540f CM4598 Compatible with Printer Models CP4025dn,CP4025n,CP4525dn,CP4525n,CP4525xh Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.