LD Compatible Replacements for Samsung SCX-4521D3 Set of 5 Black Laser Toner Cartridges for use in Samsung SCX-4321, SCX-4521, SCX-4521F, SCX-4521FG, and SCX-4521FR s - Walmart.com
Samsung SCX-4321 Toner Cartridges
Black Toner Cartridge Compatible with Samsung SCX-4521F (V6720)
Black Toner Cartridge Compatible with Samsung SCX-4521F (V6720)