Hand improvement: the mirror surface of the bicycle mirror is polished to allow a clear view and prevent rainwater from sticking. The acrylic material increases the impact resistance of the bicycle rear view mirror and makes it difficult to break.HD and wide field of vision: the bicycle mirror has a convex design that has a larger field of view than ordinary flat mirrors and improves your safety when driving on complex roads.Stable and flexible: the swivelling ball of the bicycle mirror for handlebars is adjustable to maximise friction, so that the bicycle mirror does not wobble even on uneven roads.360 rotation and 180 folding: the bicycle mirror can be adjusted at any angle, which makes the traffic conditions easy to be observed. When the bicycle rear view mirror is not in use, it can be completely stowed away without taking up space.Please note before purchasing: the bicycle mirror is suitable for all types of bicycles with a handlebar inner diameter of 17.4 mm to 22 mm. Note: Please tear off the protective film before use to better see the road conditions.mirror size:6.8 cmcolor blackNOTE:the bicycle mirror is suitable for all types of bicycles with a handlebar inner diameter of 17.4 mm to 22 mm.package includedBicycle Mirror a pairright and leftWrench *2