Save yourself some measuring and drilling when mounting our Removable Key Master Switch (Part No. 4431) or our Master Battery Cutoff Switch with Alternator Protection (Part No. 4430). This plate is laser-cut from 0.063" steel and is pre-drilled for the center neck (7/8") and two retaining bolts (1/4") for these switches. Oversized plate measures 3" at the peak and 4" long, so you can trim it to fit your application.