Feature:1. This rearview mirror can be mounted on the handlebars.2. It can be rotated 360 degrees and you can see the distance of 20-40m behind.3. Suitable for 16-22mm handlebar of bicycle.4. Can be used as a bicycle handlebar plug to effectively prevents dust, water, and other foreignobjects from entering the handlebars during daily Cycle.5. Made of fine quality material for long working time and easy to install.Specification:This bicycle rear view mirror is easy to install and it will make your riding safer, the mirror can be closed so it won't increase the resistance of riding.Features:This rearview mirror can be mounted on the handlebars.It can be rotated 360 degrees and you can see the distance of 20-40m behind.Suitable for 16-22mm handlebar of bicycle.Can be used as a bicycle handlebar plug to effectively prevents dust, water, and other foreignobjects from entering the handlebars during daily Cycle.Made of fine quality material for long working time and easy to install.Specifications:Color: blackMaterial: nylon+acrylicRearview mirror diameter: 30mm / 1.2inItem size: 40 * 50mm / 1.6 * 2.0inItem weight: 23g / 0.8ouncePackage size: 105 * 64 * 38mm / 4.1 * 2.5 * 1.5inPackage weight: 46g / 1.6ouncePacking List:1 * Handlebar Rearview MirrorPackage List:1 * Handlebar Rearview Mirror