This is the Master battery cut off switch with knob. This part is helpful not to allow the battery to drain while sitting for long periods of time.  1966-1998 All Models

This is an Rolls original, beautiful chrome knob for the switch box also known as the ignition switch. These knobs are No Longer Available with RPI having limited supply. 1960-1965 Silver Cloud...

This is a new Dashboard Switch Knob that is a Teardrop style.  It has multiple use (wiper switch, a/c, heater)  1962-1965  Silver Cloud III, S-3, Phantom V   

This is a near new Dashboard Switch Knob that is a Teardrop style.  It has multiple use (wiper switch, a/c, heater)  1962-1965  Silver Cloud III, S-3, Phantom V   

This is the knob only for the turn signal that is on the dash. This is also called the scintilla switch knob.    1946-1955 Mk-6, R-type, Dawn, Silver Wraith   1956-1965 ...