This is a compatible Lexmark 10B042K high yield black laser toner cartridge designed to perform with your Lexmark laser printer. It delivers an impressive yield of up to 15,000 pages, making it an economical alternative to the original Lexmark toner cartridge. The cartridge is engineered for reliability and quality, ensuring consistent printing results. Using compatible cartridges does not void your printer's warranty, and we back this product with a 100% Quality Satisfaction Guarantee.