This is a compatible Lexmark 10B042M high yield magenta laser toner cartridge designed to work with your Lexmark laser printer. It replaces the original Lexmark 10B042M toner cartridge and delivers a yield of up to 15,000 pages. This economical alternative to expensive OEM cartridges offers significant savings while maintaining quality and reliability. The use of compatible replacement toner cartridges does not void your printer's warranty and is backed by our 100% Quality Satisfaction Guarantee.