Bicycle rearview mirror: A rearview mirror designed for bicycles with handlebar diameters between 20-23 mm. This electric bicycle rearview mirror - safety mirror - traffic mirror brings a higher sense of driving safety to your road bike. Unique material: This folding bicycle lens is made of PA and PP, which is not easy to shake and durable. For your safety, the materials we choose are selected after testing to meet your usage needs and increase your usage experience. Larger field of view: The telescopic mirror stem provides you with maximum road safety, 360 free adjustment of direction, which can increase the rear view by up to 30 percent and reduce blind spots. Anti-glare lens: Traditional glass rearview mirrors are easy to reflect in the sun, making the car behind invisible, which is very dangerous! Blue light lenses can filter 10 percent -20 percent of the light, which can play a certain anti-glare effect, which is important for you. Easy installation: Our package not only contains the left bicycle rearview mirror, but also a hexagonal wrench for easy installation. When installing, you only need to borrow the wrench to assist, and you can easily complete the installation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin