Features1The use of ConvexMirrors greatly increases the field of view. 2360 Degree rotatable design, can rotate to the angle according to needs. 3Made of fine quality acrylic material, clear, light weight and wear-resistant in use. 4Integrated molding, high-performances PA bracket, high strength, not easy to break, wear-resistant and corrosion resistant. 5There is a protectives film when shipping to prevents scratches on the mirror surface. (Please remove the protectives film before use) 6Suitable for 16.8-20mm handlebar of bicycle. 7Can be used as a bicycle handlebar plug to effectively prevents dust, water, and other foreignobjects from entering the handlebars during daily Cycle.SpecificationThis bicycle rear view mirror is easy to install and it will make your riding safer, 360 Degree rotatable design, can rotate to the angle according to needs. Features:The use of ConvexMirrors greatly increases the field of view. 360 Degree rotatable design, can rotate to the angle according to needs. Made of fine quality acrylic material, clear, light weight and wear-resistant in use. Integrated molding, high-performances PA bracket, high strength, not easy to break, wear-resistant and corrosion resistant. There is a protectives film when shipping to prevents scratches on the mirror surface. (Please remove the protectives film before use) Suitable for 16.8-20mm 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. Specifications:Color: black Material: PA+acrylic Rearview mirror diameter: 80mm / 3.1in Item length: 210mm / 8.3in Item weight: 109g / 3.8ounce Package size: 128 * 91 * 50mm / 5.0 * 3.5 * 2.0in Package weight: 133g / 4.7ounce Packing List:1 * Handlebar Rearview Mirror 1 * Wrench 1 * ScrewPackage List1 * Handlebar Rearview Mirror 1 * Wrench 1 * Screw