Lexmark capacity toner cartridges, like this black 24B6015, are a great way of using genuine products and staying environmentally friendly too. You can use this top-quality Lexmark 24B6015  black Return Program toner cartridge in conjunction with the M5170 and any other compatible printer found listed on this page.The Lexmark 24B6015 has an estimated page yield of  35,000 pages, meaning the price per page is actually very low for a genuine consumable. Lexmark are incredibly confident in the 24B6015 and even offer a direct warranty on the unit, in the rare instance that a problem occurs.