Xerox Phaser 3330, WorkCentre 3300 Series Standard Capacity Toner Cartridge Black (2600 pages) - 106R03620 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 Xerox consumables 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 Xerox toner cartridges are something you can rely on.