Add a rocker switch where you need one, without relying on factory switch blanks. This tool helps you mark and cut a clean, rectangular opening sized for a standard rocker switch in a suitable flat plastic panel.
Position the tool at your chosen location and use it as a guide. It’s a practical solution for vehicles with no available switch blanks, or for dashboards and panels that have a designated switch location but no factory cutout.

Use it to make room for switches controlling lights, accessories, and other electrical components.