This genuine Xerox standard capacity black toner cartridge is specially formulated for the AltaLink B8145/B8155/B8170 to ensure the best print quality possible and deliver consistent and reliable results, page after page. Get peace of mind with genuine Xerox supplies and don’t settle for cheap imitations.The 006R01771 toner cartridge yields approximately 52,000 pages. Get free standard shipping on all supplies.