Wide Fitment: Arrow Bar End Mirrors fit for most Motorcycle Street Touring Cruiser Bobber Chopper Cafe Racer with standard hollow 1 inch diameter handlebars. (Before installation, please careful check the installation instructions) Stronger Material: bar end mirrors 1 Inch adopts high quality CNC billet 6061 aluminum to ensure durability and long-term use. Shot peening matte finish with anodized treatment lever improves corrosion resistance and hardness. Clear Vision: Adopted high quality HD convex glass lens, with 180 Degree adjustable ball joint and foldable stem motorcycle mirrors design, it provides you a high definition and wider vision, easily seeing the upcoming cars and obstacles, better ensuring a safe drive! Inverted Horn Adapter: This 1 inch bar end mirrors for motorcycles adopts a unique Inverted horn adapter design, the extended part of the adapter is easier to open and easier to fix inside the handlebar, which solves the problem that the mirror is easy to loosen during driving. Anti-stick washer: The anti-stick washer is added to isolate the handle and the throttle, forming the absolute independence of the connection position of the motorcycle mirror and the throttle handle, so that the throttle maintains the original elasticity and safer to use.