"Product description: Easy installation: It is suitable for bicycle handlebars with inner diameter of 17.4mm -22mm. It easy to install and anti-skid, enhancing stability. Ideal for most of the bikes: Ideal for road bikes, mountain bikes, e-bikes, hybrid bikes, city bikes, and your bike! Prepare for your journey: When you ride a bicycle without knowing what is happening around you, your life is in danger! Use our bike mirror to stay safe. The high-definition convex lens can provide you with a wide-angle field of view. Ensure safe driving in various traffic conditions. View comfortably: This mirror can be adjusted up to 360 degrees. Which allows you to get maximum coverage of the road. No more neck strains and uncomfortable viewing. This mirror helps you broaden your horizon and lets you know what’s coming from behind."