This is a compatible Okidata 43979206 high yield black toner cartridge designed for use with the Okidata B420dn laser printer. It is engineered to deliver a yield of up to 10,000 pages, providing an economical alternative to the original Okidata toner cartridge. Manufactured with 100% new components, this cartridge ensures reliable performance and high-quality printing results. The use of this compatible toner does not void your printer's warranty and is backed by our 100% Quality Satisfaction Guarantee.