1. Set the angle you want, the viewing angle is more comfortable and you can see things behind you clearly. You no longer have to look behind you or the left and right vehicles. It can give you a better driving experience! 2. WIDER FIELD OF VISION: The mirror diameter of the bicycle rearview mirror is 6.8cm / 2.67inch. With a clear convex mirror, the field of view is wider so that you can see the surroundings better. Improve bike safety. Even if you are driving with family and friends, there is no longer any overload. 3. SUITABLE FOR MOST BICYCLES: The bicycle handlebar is suitable for both the left and the right side. The applicable holes in the inside diameter of the handlebar must be between 17.4-22 mm and be 90% compatible with bicycles, mountain bikes and racing bikes. It is a must for cycling��? 4.ROBUST & DURABLE: The bracket is not easy to break. The mirror surface is smooth and crack-free and is made of durable nylon resin with impact resistance. 5. FIXED: The bracket is fixed with expansion screws. Once installed, the mirror won't shake or break on downhill roads.