This bicycle rear view 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. This handlebar mirror fits 20-25mm handlebar (standard size) and is suitable for all conventional bikes such as e-bikes, mountain bikes, beach cruiser bikes, city bikes, hybrid bikes and your bike. Without any complicated tools, this mirror can be installed hassle-free.