Large HD Side Mirror: Our bicycle rearview mirror features a 6-inch (15 cm) HD glass lens, providing a true-to-life image without distortion or glare. The larger mirror allows you to clearly see oncoming traffic from behind, making your ride safer and easier. 360-Degree Rotating Mirror: The bicycle rearview mirror can be flexibly rotated 360 degrees, allowing you to freely adjust it to a suitable angle for a better view of things in different directions. This can effectively prevent traffic accidents and improve rider safety. Stable and Easy Installation: The upgraded street mirror is sturdy and easy to install. The handlebar mirror frame is secured with double screws. Simply use the included wrench to insert the base of the bicycle mirror into the handlebars and tighten the screws to securely mount the mirror. This process will only take a few minutes. Use with 20-24mm handlebars: This mirror is suitable for bicycles with a handlebar diameter of 20-24mm. Please measure your handlebar diameter before ordering. Multifunctional use: This bicycle mirror is suitable for e-bikes, racing bikes, mountain bikes, children's bikes, electric bikes, scooters, snowmobiles, etc.