Bicycle mirrors are useful for being aware of your surroundings. It is useful when the are too close to your back wheel or a cyclist and a dangerous overtaking manoeuvre are easier to be This bike mirror provides you wide angle and high definition. It is super clear and fully adjustable. You can adjust it to your desire direction. Feature - Color: Black - Material: aluminum alloy+ABS - Size: 13.2 x 7.6 x 2cm - Adoption of material, the rear view mirror is durable and use. - Fast to install and dismantle by a wrench. The process is not comlicated. - Light weight, large lens, scratch resistant. Fashion appearence will attract other riders attentions. - Adjustable to any angle. Support 360 degree rotating. - With reflector on the back, it can make you safer when riding on the road. - Note: Fit for 21-23mm outside diameter handlebar, please ensure the size is coordinate with your bike. - Warm Tip: Dear buyer, due to lighting effect, monitor’s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 4 x Mirrors