YOUR SAFETY FIRST:This unique bike rearview mirror is designed to give you clear visuals of the road conditions behind you to help keep you safe from road accidents. FULL ANGULAR ADJUSTMENT:Our bike mirrors is built to rotate 360°for maximum coverage. It’s very easy to adjust to your desired angle and hassle-free to install. Remember to fasten the screw after adjustment. LONG ARM FOR BETTER COVERAGE:The environmentally safe long arm made of Nylon resin bracket that better horizon is covered for a clear rear view. Suitable for Bicycle handlebars which is 22.2 mm. STURDY AND DURABLE: comes with ABS optical frame and aluminum alloy which provide absolute protection to the mirror against breakage due to some slight bumps. Specifications: Model: MR080 (L/R), MR081 (L/R) Lens Material: Unbreakable Stainless Steel Base Material: Eco-friendly High Impact Nylon Fiber Clamp Material: Aluminum ED Application: Flat 22.2mm Diameter Handlebars Installation Tool: Hex Key 5mm(Not inluded) Package Include: 1pc Left/ 1pc Right/ Left & Right Bicycle Rearview Mirrors