The Sharp MX-61FT black toner cartridge is a single colour toner cartridge designed to be used in the event of black toner depletion in your compatible printer. This toner cartridge is a staple of th office or workplace where there is a high demand for monochrome printing. The black Sharp MX-61FT toner helps ensure clear, crisp prints for both text and graphic output, while the cartridge design also works to ensure consistent quality across print runs. The cartridge has a page yield of approximately 40,000 pages when an average coverage of 5% is assumed. Read Less