Genuine OEM Samsung ML-6512 ND Toners

For the ML-6512ND, MLT-R309 is an imaging drum, while MLT-D309S is the black toner cartridge. The similar part names do not make them the same supply. Check whether your printer is asking for toner or drum maintenance before ordering.

Toner Buzz carries genuine Samsung MLT-D309S toner and the separate MLT-R309 drum. Order D309S to replenish black toner, and choose R309 for the drum. They are individual purchases, so a toner order does not automatically need a drum added to it.