For use with IBM Wheelwriter 3, 5, 6, 20, 30, 40, 50, 70, Personal Wheelwriter II, IBM 5223, 6746, 6747, 6779, 6783, 6784, 6787, IBM Easystrike, IBM PS/1, IBM Wheelprinter E, Panasonic Jetwriter III, IV, Panasonic KX-E 3000, 7000, 8000