Easy to use: the mirror can be fitted without tools, we deliver 2 non-slip rubber gaskets for extra friction to hold the lens to the reflector mount, and can be securely and easily attached to any handlebar mounted (suitable for handlebar diameter 22-32mm) 360° adjustable design: This bicycle mirror has 360 degree rotating lenses to see the road from different directions and gives you a multi-angle rear view. Designed with a flexible adjustable support bar that can be bent to any angle. HD Convex Bike Mirror: 8cm diameter wide-angle acrylic mirror, convex lens which can expand the field of vision, clear and wide, for maximum cycling safety. With this mirror, you no longer need to turn around to see the road behind you. (Remark : Remember to remove the protective film from the surface before use). Low weight, but resistant: It weighs only 108 grams. But the sturdy polymer and aluminum construction makes this mirror a perfect combination of super strength and weight. It is equipped with aluminum support tubes and a black plastic shell that provides better stability when passing over the irregularities of the road. Many uses: This bicycle mirror is suitable for handlebars with a diameter of 22-32 mm and can be mounted on both sides of the handlebar. Suitable for most bicycles, such as road bikes, mountain bikes, BMX, electric bikes, motorcycles, cruisers, electric motorcycles, etc.