1.PROFESSIONAL DESIGN: Designed for cycling, easy to see the visor. Mirror can be rotated 360 degrees, flexible and convenient. 2.GENERAL DESIGN: There are light reflecting strips on the back of the mirror that make the bike safer.bicycle rear view mirror handlebar 3. EASY INSTALLATION: Plug and play, which is easy to install and use. For most handlebars, mountain bikes and racing bikes. 4.Size of the mounting clamp: for 21-23 mm cross tube diameter. Bicycle handlebar mirror without distortion. Razor-sharp, anti-reflective, impact-resistant and glare-free real glass 5.QUALITY MATERIAL: bicycle mirror Made of high quality stainless steel and nylon resin, it is shockproof and corrosion resistant, ideal for all weather conditions.