The classic chrome bullet mirror has been a favorite for many people for some time. When the locking screw is tightened and the mounting is stable, these mirrors reflect with minimal vibration. XKs offers three slightly different variations on a theme, all imported. This mirror is mounted with stainless sheet metal screws from the top down with a long base. Screw mount is 3-5/8 on-center with a rubber gasket. The lens diameter is 3-3/4.