Grayston Flash/Off toggle switch. Good quality 20 amp, all metal toggle lever type switch. Used for components like your wipers, single speed on and the wipers on the momentary side. Fits through a dash or switch panel in a 12.5mm hole and secured with a locknut on the front, which also secures the on/off plate (this can be omitted as desired). Wires are secured to the rear with screw terminations.
