These printers use the TN720 cartridge:
Click On a Printer to View it's Cartridges
          Brother DCP 8110 DN
          Brother DCP 8150 DN
          Brother DCP 8155 DN
          Brother DCP 8250 DN
          Brother HL 5440 D
          Brother HL 5450 DNT
          Brother HL 5450 DN
          Brother HL 5470 DW
          Brother HL 5470 DWT
          Brother HL 6180 DW
          Brother HL 6180 DWT
          Brother MFC 8510 DN
          Brother MFC 8520 DN
          Brother MFC 8710 DW
          Brother MFC 8810 DW
          Brother MFC 8910 DW
          Brother MFC 8950 DW
          Brother MFC 8950 DWT