Sturdy and Durable - Each bicycle rear view mirror is made of high quality nylon resin, impact resistant and anti-shatter, weighs only 78 grams; HD cycling mirror lens with anti-scratch protective film, need to tear off the film before use, ABS handle, sturdy and durable, the mirror should be used for a long time. HD Safe Convex Mirror Bike - Mountain bike mirror features a convex lens, providing a wide field of vision and can be adjusted to any viewing angle. Notice to remove the protective film before using the bicycle mirror. 360 Degree Rotation - The bicycle 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 safer driving. Easy to Install - Well mounted in minutes - 1.The mirror aligns the inclined surfaces to connect the bar end of the bike; 2. Fully insert the connection point expansion bolt into the handlebar end; 3. Using the hex wrench (in the package), tighten and adjust to the desired position. Suitable For - Suitable for handlebars with a diameter between 17.4-22mm, the rearview mirror bike is applicable for left and right sides. Ideal for city bikes, motorcycle, e-bike, bmx, mountain bike and road bikes. Package includes 2*bike mirror, 1*hex wrench. Size (H*W): 140*70mm (extended) Color: Black Quantity: 2 pieces Note: 1.For manual measurement, please allow an error of 1-2 cm. 2.The color may have a little difference due to lights, screens, etc.