Sharp FO-4450 Fax Machine Drum - 20000Pages

Drum for Sharp FO-4450 Fax Machine Pages: 20,000 Page Yield Whats the difference between a drum and a toner? The toner cartridge is just that, a cartridge holding the toner/ink. The drum does the work. For your Printer, Sharp Recommends Changing your drum once per every 3-4 toner cartridges.