TC Bros. Choppers universal fit ignition switch mounting tabs are CNC laser cut from 12 gauge (.105" thick) American made mild steel. Vintage style curves and contours provide eye appeal while saving you serious time on your build. Most ignition switches require a "D" shaped installation hole to prevent rotation while turning the key. These tabs have the proper shaped hole to fit most ignition switches with 3/4" or 13/16" diameter threads.The bolt-on ignition switch mounting tabs come with a durable black powdercoat finish.