EEEKit 2 Packs Bundle Universal Mini Rotaty Rearview Handlebar Glass Mirror for Mountain Road Bike Cycling Bicycle 360 rotation, compact, stylish appearance bike mirror, better adjust to any direction Universal mini rotaty rearview handlebar hlass mirror for bike bicycle cycling 360 degree rotate help you watch every direction of you back. Sometimes treat it as a mirror to check your face or cloth. Compatible with 25mm-55mm internal diameter of the bar. Mirror Dimension:2.5" L x 1.7" W(70 x 50 mm). Easily install and remove: mounting bracket is retractable silicon rubber belt, can be easily install even with no tools