These Heavy-duty top motor mounts fit Harley-Davidson 1948-1984 Big Twins such as Panheads, generator Shovelheads and cone Shovelheads. Featuring a 13/16 inch D-shaped hole which accepts various aftermarket ignition switches such as the Lowbrow , ideal for choppers and custom builds. Stainless steel construction, riveted together for maximum strength. Made in Cleveland, Ohio.