Green Initiative Remanufactured High Yield Black Laser Toner Cartridge for Brother TN580/TN550 High performance, guaranteed replacement toner cartridge from Green Initiative. High yield black replacement toner for Brother MFC, HL and DCP series machines (see full compatibility below). Approximate yield: 7000 pages at 5% page coverage Feel good about your purchase with a green, recycled product which provides the same performance and reliability as original Brother supplies. Helps protect our environment by containing recycled components, resulting in over 90% of the original cartridge's non-wearing parts from needlessly clogging landfills.