Xerox High Yield Black and Standard Yield Color Toner Cartridge Set for Phaser 6500, WorkCentre 6505 Genuine Xerox toner cartridges High yield black toner cartridge 106R01597 yields up to 3K pages Standard yield cyan 106R01591, magenta 106R01592 and yellow 106R01593 yield up to 1K pages Works with Xerox Phaser 6500 and Xerox WorkCentre 6505 printers Genuine Xerox Supplies assure you of the best quality output from your Xerox printer