Amazon.com: Okidata 44844512 OKI - Black - original - toner cartridge - for C831cdtn, 831DM, 831dn, 831n by Oki Data : Office Products
Amazon.com: OKI Toner Set for C610 Series Printers. Full Set of 4 Genuine OKI Toner Cartridges. 44315301 Yellow, 44315302 Magenta, 44315303 Cyan, 44315304 Black. Type C15 - 6K Yield on colors, 8K