These printers use the TK-437 cartridge:
Click On a Printer to View it's Cartridges
          Kyocera-Mita TASKalfa 180
          Kyocera-Mita TASKalfa 181
          Kyocera-Mita TASKalfa 220
          Kyocera-Mita TASKalfa 221
          Kyocera TASKalfa 180
          Kyocera TASKalfa 181
          Kyocera TASKalfa 220
          Kyocera TASKalfa 221
          Royal-Copystar CS-180
          Royal-Copystar CS-181
          Royal-Copystar CS-220
          Royal-Copystar CS-221