This is a compatible replacement for the Okidata 42102901 high yield black laser toner cartridge. It delivers an impressive yield of up to 7,000 pages, making it an economical choice for high-volume printing. Designed to fit seamlessly into the drum housing unit, this cartridge allows for easy replacement without the need to change the entire drum. Using compatible cartridges does not void your Okidata printer warranty. We back this product with a 100% Quality Satisfaction Guarantee.