Safer high-definition rearview mirror: 5.3 inches * 3 inches wide-angle mirror surface, slightly convex, larger field of view. HD, explosion-proof, auto-grade safety lens; stainless steel mirror, safe and durable, not easy to damage; robust nylon fiber, aluminum with black ED BLACK clamp, The diameter of the fastening clamp is 2 cm, but it is variable, suitable for 21mm-26mm Handlebars; the rear view mirror has a reflective night design on the back, making it safer at night. 360-degree rotatable and adjustable: equipped with a 360-degree rotatable ball, which can be tilted to view road conditions from different directions. The mirror is rotated with a 180 plane to adjust the position of the mirror, providing a wide angle of view for any viewing, and it is no longer necessary to turn around to clearly understand the situation behind. Easy to install: Just loosen the screws and fix the mirror on the handlebar, and then tighten the screws with a screwdriver. This process only takes a few minutes, and you can enjoy a pleasant riding life. Wide range of applications: suitable for mountain bikes, road bikes, scooters, motorcycles, electric bicycles, etc. If you are not satisfied with your purchase for any reason, we will answer your questions at any time, and we are glad to receive your letter.