You are buying a brand new box of EZink toner cartridges that are model TN221/TN225. When they sent the set from the factory they inserted 2 black toner cartridges instead of a Magenta. So the box set contains 2 black, 1 cyan, 1 yellow and 2 black, it is missing the magenta. These toner cartridges are compatible with Brother HL-3140cw, HL-3170cdw, HL-3180CDW, MFC-9130cw, MFC-9330cdw, MFC-9340cdw, DCP-9020CDN Laser Printers