Xerox Phaser 6510, WorkCentre 6515 high-capacity toner cartridge Magenta (4300 pages) - 106R03691 has been specifically designed and tested for our products. It ensures optimal print quality and the highest reliability during the printing process. You can count on it, page after page. Original supplies from Xerox and Xerox systems are made for each other. Do not accept imitations. Compatible toners can cause failures in Xerox printers and lead to poor print quality and weak colors. With over 75 years of experience, original toner cartridges from Xerox are something you can rely on.