This is a Compatible Brother DR300 (DR-300) black laser drum unit designed for use with Brother laser printers. It delivers a standard yield of up to 20,000 pages, making it an economical alternative to the original Brother drum unit. Engineered with new parts, including OPC drums and wiper blades, this drum unit maintains high standards of quality and reliability. The use of compatible replacement laser drum units does not void your printer warranty. Backed by our 100% Quality Satisfaction Guarantee.