Toner cartridge with new MICR toner is designed for use with Lexmark MX317, MS317, MX417, MS417, MX517, MS517, MX617 & MS617. Cartridge contains magnetic image character-recognition ink for security purposes in printing checks. It uses special MICR toner developed & tested specifically for each model printer, retaining the original components & keeping the OEM factory seal intact. Cartridge yields approximately 8,500 pages.