Speedy Inks - Compatible Dell 1250 331-0778 / 3K9XM Black Toner Cartridge For use in Dell: Color Laser C1760nw, C1765nf, C1765nfw, 1250c, 1350cnw, 1355cn, & 1355cnw Page Yield: 2000 | Color: Black Shelf Life: 24-36 Months The use of aftermarket replacement cartridges and supplies does not void your printer's warranty