The Brother TN-3600 toner ensures your prints are delivered fast and in perfect clarity. Genuine supplies like the TN-3600 are expertly engineered and rigorously tested in order to provide better value for money in the long run than cheaper alternatives and to protect your printers warranty. Brother consider the environmental impact at every stage of your printers life cycle, reducing waste at landfill. All Brother hardware and toners are built to have as little impact on the environment as possible. Genuine Brother TN-3600 toner - worth it every time.