Product type: Sharp Compatible Fax Toner Cartridge Color: Black Cartridge duty cycle: Page Yield 6,000 pages @5% Average Sharp FO-50ND FO50ND F050ND F0-50ND Black Compatible Toner THIS TONER SHALL WORK FOR: Sharp FO-4400, FO-4470, FO-DC500, FO-DC525, FO-DC535, FO-DC600, FO-DC635 printers