With an even longer life than its Xerox toner cartridge counterpart, this genuine 013R00658 yellow drum cartridge offers exceptional value. The Xerox 13R00658 drum unit takes toner powder from the cartridge and helps apply it to paper for fusing. Your Xerox printer simply cannot operate without the 13R658 drum unit and is just as important as a good set of toners. This brand new Xerox 013R00658 drum cartridge is compatible with the Xerox WorkCentre 7120 and all of the other printers listed on this page.