Remanufactured Black toner for use with SCX4521 model Samsung printers | TonerStore
LD Compatible Replacement for Samsung SCX-4521D3 Black Laser Toner Cartridge for use in Samsung SCX-4321, SCX-4521, SCX-4521F, SCX-4521FG, and SCX-4521FR s - Walmart.com
Compatible Black Toner Cartridge SCX-4521D3 for Samsung Printer SCX-4321/ SCX-4521F/SCX-4721F - Tianse