【Wider field of view】: Bike Bar End Mirror is designed with adjustable 360°rotation, so that you can adjust the angle to every direction which is suitable for you. The HD automotive grade convex glass bike mirror has extended mirror arm and bigger mirror surface, which gives you a higher riding safety feeling 【Upgrade Material】: Bicycle Mirror extended mirror arm is made of high strength and durable nylon fiber material, high impact frame. Inside the mirror arm has fashional and stable hollow structure. The sturdy structure of handlebar rearview mirror ensures maximum safety on the road 【Ensure Adjustability】：The rear view mirror has three screws at the back, can be retightened after using a long time. Do not worry about lossen after using for a long time 【Wide Application】: Universal design bicycle rear view mirror fits the flat handlebar and drop bar, only fits 15-17.5/17.5-20mm diameter of the bar end, suitable for open ended grips or cut a hole. The bike mirror is compatible with almost all bicycles, road bikes, MTB, E-bikes and scooters, and so on 【Satisfaction Guaranteed】: Both customer satisfaction and product quality are very important to us. So if you encounter any problems, We can provideReplacement and lifetime warranty