The use of Brother Genuine replacement standard-yield toner cartridges like the TN-221BK not only produces sharp, black and white pages with the quality you expect from Brother products – it also increases productivity and can reduce downtime when fulfilled through Amazon Dash Replenishment. The Brother TN-221BK replacement black toner cartridge is for use with 6 Brother printers. This professional cartridge is intelligently engineered to work in seamless unison without compromising the quality of the print.Upon activation, Amazon Dash Replenishment–eligible Brother printers will seamlessly order Brother Genuine supplies through your Amazon account and ship them directly to your door. The Brother Genuine TN-221BK replacement standard-yield black toner cartridge can print approximately 2,500 pages(1). Once you’ve ordered your replacement cartridges from Amazon, you can feel comfortable knowing that Brother has an environmentally smart solution. Brother is dedicated to being environmentally responsible and offers disposal programs for properly discarding its cartridges.This replacement cartridge is for use with the following Brother printers and all-in-ones; HL3140CW, HL3170CDW, HL3180CDW, MFC9130CW, MFC9330CDW, MFC9340CDW. (1)Approx. toner cartridge yields in accordance with ISO/IEC 19798 (Letter/A4) standards.