Switch10206: Push button w/CPB nut, 15.9mm Dia10207: Ditto, w/cover10212-2PB/-2PP: 2P w/CPB or plastic knob, 9.5mm Dia10213-3PB/-3PP: 3P w/CPB or plastic knob, 9.5mm Dia10214-4PB/-4PP: 4P w/CPB or plastic knob, 9.5mm Dia