Xerox Phaser® 3610, WorkCentre® 3615 Standard Capacity Toner Cartridge Black (5,900 Pages) - 106R02720 has been specially formulated and tested to provide the best image quality and most reliable printing you can count on page after page. Xerox Genuine Supplies and Xerox equipment are made for each other. Accept no imitations. Compatible toners may risk breakdowns of Xerox printers and result in poor print quality and weak colors. With over 75 years’ experience, Xerox Original Toner Cartridges are something you can rely on.