The Xerox extra high-capacity black print cartridge is suitable for use in the Xerox B305, Xerox B310, and Xerox B315 printers device. It has the capacity to print up to 20, 000 high-quality, crisp and clear printed pages. Once you have used the cartridge completely, it is returnable to Xerox for remanufacturing. | Xerox Black Extra High Capacity Toner Cartridge for B305/B310/B315 (006R04378)