Do it Wiser Compatible High Yield Toner Cartridges Replacement for Xerox Phaser 7500 7500N 7500DN 7500YDN 7500DT 7500YD 4-Pack Compatible with Part Number: 106R01439 106R01436 106R01437 106R01438 4- Pack includes Black Cyan Magenta Yellow compatible toner cartridges x1 each Our Do it Wiser smart toner cartridges are covered by a 1 year warranty against defects Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free Estimated page yield: Black 19800 pages and colors 17800 pages (depends on printer and usage)