Compatible extra high yield black toner cartridge for Lexmark 51B1X00, delivering up to 20,000 pages. This cartridge is manufactured with 100% new components and is designed to provide reliable and consistent print quality. It serves as an economical alternative to the original Lexmark toner cartridges, offering significant savings without compromising performance. The use of compatible cartridges does not void your printer's warranty and is backed by our 100% Quality Satisfaction Guarantee.