These original Lexmark extra high yield toner cartridges are specifically designed to deliver professional quality every time you print. They provide unmatched text edge quality for smoother images and crisper text. Advanced technology measures and monitors toner saturation to ensure that black is consistently black, magenta is consistently magenta, cyan is consistently cyan and yellow is consistently yellow. Magenta, cyan and yellow cartridges yield up to 22,000 pages. Black cartridges yield up to 32,000 pages.