1. Toolless installation: suitable for 22mm-32mm bicycle handlebars. Equipped with 2 non-slip rubber washers for added friction, the lens can be attached to the frame to hold it in place and can be securely and easily mounted to any installed handlebar2. Multi-angle adjustment: can be bent at will, can be adjusted to the angle you need, to avoid neck fatigue3. Safe cycling: With clear rearview mirrors, you can see things behind you or fast-on accidents.4.360 degree rotatable glass: The movable angle can be tilted at any time to view light from different directions.5. Light and sturdy: weighs only 120gColour: BlackMaterial: plexiglass aluminum tube ABSSize: As Picture ShownWeight: 130g (Single)Package Include: 1 PC Rearview Mirror/1 Pair Rearview MirrorNote: 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks.2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.