There are several cartridge lines, which means that you have to look carefully which cartridges fit in your printer. The Brother LC-3219 cartridges fit in certain MFC printers. You can see exactly which ones in the product descriptions of the cartridges. Make sure to check this before you purchase them. The LC-3219 cartridges are available by 2 brands, Brother and the private label brand Pixeljet. They both fit and work, but there may be a difference in the number of pages the cartridges print.