Back in stock, genuine Cole-Hersee keyswitches, with a polished metal housing, with screw terminals. In the locked position, the magneto is OFF (grounded out), and it needs as few as one wire if used without a battery. If using with battery, or electric start, there is an ON position (accessory and lights), and a third position, START (momentary). Mounts in the standard 3/4 hole with the provided hardware. Third photo shows terminal layout.