Remanufactured Black High-Yield MICR Toner, Replacement for MS310M (50F0HA0), 5,000 Page-YieldSpecifically formulated for check printing, Innovera MICR toner cartridges provide businesses with the quality they require and the value they need. They meet all US and Canadian banking standards for signal strength. By using a special high adhesion toner formula, designed specifically for your printer, these MICR toner cartridges can significantly reduce the possibility of costly fees stemming from rejected checks. Note: This is a non returnable