This is a Compatible Brother DR600 Laser Drum unit guaranteed to perform with Brother Laser Printers. It replaces the original Brother DR600 Laser Drum unit. The compatible replacement DR600 Laser Toner 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 DR600 and offer high-quality printing results. Containing new drum and other rollers, they are an economical alternative to expensive OEM DR-600 Brother Laser Drum units and supplies, and offer big savings over brand-name DR600 Laser Drum unit and supplies. This compatible DR600 unit is a drum unit and uses the TN670 laser toner cartridges. You can replace the TN670 without replacing the whole DR600 drum unit. The use of compatible replacement Laser Toner Cartridges and supplies does not void Printer Warranty. We offer a Two Year 100% Quality Satisfaction Guarantee on our Compatible DR600 Laser Toner Cartridges and supplies. For use in the following printers HL Printers HL-6050DW, HL Printers HL-6050DN, HL Printers HL-6050D, HL Printers HL-6050.