These printers use the TK-717 cartridge:

Kyocera-Mita KM 3050

Kyocera-Mita KM 4050

Kyocera-Mita KM 5050

Kyocera KM 3050

Kyocera KM 4050

Kyocera KM 5050

NEC IT 5050

Royal-Copystar CS 3050

Royal-Copystar CS 4050

Royal-Copystar CS 5050