This is a Compatible Brother DR350 (DR-350) Laser Drum unit guaranteed to perform with Brother Laser Printers. It replaces the original Brother DR350 Laser Drum unit. The compatible replacement DR350 Laser Drum Cartridges and supplies (also known as generic) are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM (Original Equipment Manufacturer) standards for the DR-350 and offer high-quality printing results. Replacing the critical internal parts, including OPC drums, wiper blades, and other internal parts, and print-testing each drum, they are an economical alternative to expensive OEM DR350 Brother Laser Drum units and supplies, and offer big savings over brand-name DR-350 Laser Drum unit and supplies. The use of compatible replacement Laser Drum Units and supplies does not void Printer Warranty. Our Compatible DR350 Laser Drum is a replacement for Brother DR350 / DR-350 Drum Unit. The TN350 is the replacement laser toner cartridge that fits into the DR350 drum housing. You can replace the Brother TN350 without replacing the entire DR350 drum housing. We offer a 100% Quality Satisfaction Guarantee on our Compatible DR350 Laser Drum Units and supplies. For use in the DR350 Compatible Brother DR-350 Laser Drum Unit printers. 4inkjets is the exclusive reseller of LD Products brand of high quality printing supplies on Amazon.