2 PK Compatible Samsung SCX4521 Black Non-OEM Toner Cartridge For Samsung SCX-4321F SCX-4521F

3000 pg yield is a joke, 1st cartridge turned out to be less than half that. 2nd cartidge was defective and didn't work at all (copier made loud clicking sounds like mechanism wasn't compatible. Absolute garbage.

Inferior quality!! Plus it cost me more that twenty bucks to return them! NEVER AGAIN!!!

The tonner doesn't compatible with Samsung SCX4521. Message display as "No Cartridge"