Compatible replacement for the Lexmark 501U ultra high yield black toner cartridge, delivering up to 20,000 pages. This cartridge is manufactured with 100% new components, ensuring reliable performance and high-quality printing results. It serves as an economical alternative to the original Lexmark 50F1U00 toner cartridge, providing significant savings without compromising on quality. The use of compatible cartridges does not void your printer warranty and is backed by our 100% Quality Satisfaction Guarantee.