Brother Genuine Drum Unit. Keep up with the demands of daily office printing using this Brother DR 350 drum unit. Print and copy with this toner drum. Designed for use in select Brother printers, the toner delivers crisp sharp text and images to keep up with daily demand. This Brother DR 350 drum unit is an OEM product, installing quickly and eliminating downtime. Depend on this quality OEM drum cartridge for optimal printing. Engineered for reliable, accurate image transfer. Easy installation gets you back to printing in no time. Superior quality. Even toner distribution and flow.