Laser Tek Services&reg; 2 Pack Compatible MLT-D203L High Yield Black Toner Cartridge Replacement for use in Samsung ProXpress M3320ND, ProXpress M3370FD, SL-M3820DW, SL-M3870FW, SL-M4020ND, SL-M4070FR Package Contains 2 Black High Yield MLT-D203L Replacement Toner Cartridges For use in the following printer models: Samsung ProXpress M3220ND, ProXpress M3370FD, SL-M3820DW, SL-M3870FW, SL-M4010ND, SL-M4070FR Page Yield: 5,000 pages at 5% coverage Product Comes with a 1 year 100% Satisfaction Guarantee! Laser Tek Services offers free technical support for any questions you may have. Manufactured by ISO and STMC certified facility.| The Use of Laser Tek Services compatible products will not void your printers warranty.