Robust and Durable: Each bicycle mirror is made of high quality acrylic acid, shockproof and shatterproof, weighs only 89 gramsABS handle, sturdy and durable, the mirror should be used for a long time. Safe Bike Convex Mirror: Convex acrylic glass, impact resistant, will not crack. Even if you drive in the mountains, the mirror won't shake, chip or break. Please remove the surface protective film when using.360 Degree Rotation: The bike mirror has a full 360 degree rotation and can adjust to any direction to help you look at all directions. Better to adapt to all directions to observe all directions of the back, which ensures a safer ride.Easy Install: 1.The mirror aligns the angled surfaces to connect the end of the bike bar 2. Fully insert the connection point expansion bolt into the handlebar end 3. Using the hex wrench (in the package), tighten and adjust to desired position.Wide Application: This mirror is universal and suitable for both left and right side. It is suitable for flat handlebars with an inner diameter of 17.4mm to 22mm. Ideal for a variety of bikes such as racing bike, mountain bike, BMX, city bike, motorcycle, electric bike, etc.