This is a compatible Brother TN439C cyan ultra high yield toner cartridge designed to perform with your Brother laser printer. It delivers an impressive yield of up to 9,000 pages, making it an economical alternative to the original Brother TN439C toner. Manufactured brand new, this compatible toner guarantees high-quality printing results and reliability. Using compatible replacement toners does not void your printer warranty. Backed by our 100% Quality Satisfaction Guarantee.