CH4x4 Rocker Switch Zombie Light Symbol is a single throw ON OFF switch designed to operate your 12 volt accessories. They have a face surface size of 2 (50mm) x 1 (25mm) and uses a standard din size mounting hole of 1.41 (36mm) x .86 (22mm) this is the standard size of most switch holes in modern vehicles, however it is best to check your particular hole size if unsure.