Toner Refill Store &trade; Pack Premium Compatible DR-350 DR350 Drum Unit for the Brother TN350 (TN-350) HL-2040 MFC-7420 Comes with 1 High Yield Drum Unit Toner Refill Store  Pack Premium Compatible DR-350 DR350 Drum Unit for the Brother TN350 (TN-350) HL-2040 MFC-7420. All of our cartridges and drums are made at an ISO-9001 certified factory so you can expect premium quality printing. Our Toner Refill Kits are made from the highest quality materials in order to match the OEM quality as close as possible and ensure that you receive the highest quality prints! Product Comes with a 1 year 100% Satisfaction Guarantee Toner Refill Store offers free technical support for any questions you may have Northland Wholesale is the exclusive seller of Toner Refill Store toner refill kits and Toner Cartridges.