Save money on expensive original Brother drum units without compromising on quality by choosing a Q-Connect Brother DR2200 Drum Unit (OBDR4000). Designed to fit a range of Brother printers, this drum unit is an essential component for reliable operation of your printer. It uses a electrostatic charge to help shape toner into text and graphics on the page. Because wear and tear can cause print performance to diminish over time, make sure you replace the unit regularly. This item prints up to 12,000 pages. This item will only need replacing once 12,000 pages have been printed.