WIDER VISIONThe diameter of this handlebar mirror is 7 cm. The surface of the high-definition convex rearview mirror is smooth and glare-free, which will give you a clearer and wider vision and make driving safer. 360 ADJUSTABLEWith the 360 degree rotating design, this rearview mirror sure can be adjusted to any angle. In addition, the glass rearview mirror can be installed on the left or right so that the driver can clearly see the traffic behind without turning their head. STURDY AND DURABLEThe bicycle rearview mirror is made of durable nylon resin , resistant to shocks and corrosion. The sturdy structure ensures that this mini rearview mirror can also be used for a long time. When unexpected bumps occur, it will not break easily. EASY TO INSTALL1. Connect the expansion screw to the rearview mirror (please do not tighten the screw first) 2. Remove the connector from the handlebar and insert the expansion screw into the hole of the handlebar 3. Turn the screw and tighten the bicycle rearview mirror. WIDE APPLICATION This mirror is applicable to the left or right end of the handlebar. Suitable for handlebars from 17.4mm to 22mm (inner diameter), please measure it before purchasing. Suitable for all kinds of bicycles, such as racing bikes, mountain bikes, city bikes, motorcycles, electric bikes, etc. Product color: black Delivery quantity: 2 pieces/ pair becomeveryrich