SAFE MATERIALS: This bicycle mirror is made of high quality ABS, plastic and glass, which can effectively resist collisions and debris, shock and corrosion. Sturdy aluminum spacers and a black plastic housing ensure the longevity of the mirror. You don't have to worry about the mirror cracking after repeated bending, it won't crack easily even on very bumpy road sections. Clear and wide field of vision: The 8cm diameter HD rearview mirror has a smooth and glare-free surface, giving you a clearer view. Convex mirror design maximizes field of view. Allows you to see the surrounding environment and the road behind clearly without turning your head, improving driving safety. Rotatable and Adjustable: This bicycle mirror has a 360 rotatable design, which can be adjusted by pushing the edge of the lens up or down. Tilt and move the support rod at any time and from multiple angles, you can see the light in different directions and the road conditions in different directions. Provides you with a more comprehensive rear view to ensure riding safety. Easy to Install: The bicycle mirror can be quickly installed and removed. We have provided you with anti-slip rubber washers, you can attach the lens to the frame to increase friction to keep it firmly in place, very easy to install on any handlebar mounted, flexible to use. < p>Wide Application: This bicycle mirror is suitable for handlebars with a diameter of 20mm to 30mm. It can be mounted on both sides of the handlebars and is perfect for most bicycles such as road bikes, mountain bikes, e-bikes, hybrid bikes, city bikes, motorcycles, e-bikes, e-scooters , etc.