78C1XK0 Toner Cartridge Compatible for Lexmark CS421 CX421This toner cartridge is a replacement for select Lexmark laser printers. It provides a page yield of approximately 8,500 pages based on 5% page coverage, matching the output of original cartridges. The cartridge installs easily and works immediately with compatible models. It delivers sharp black text and consistent print quality without bleeding or streaking. Each package includes one black toner cartridge.MPNAPRONEItemweight0.82 poundsProductdimensions4.4 x 3.6 x 6.3 inchesPartnumberAPRONEColorBlack