●Improved material: COICER bicycle mirror handlebar is made of HD stainless steel and environmentally friendly impact-resistant fibre-reinforced nylon body, high-quality material, more resistant to scratches and falls, improves safety when cycling. ●Universal design: universal design bicycle mirror fits left and right flat handlebars (suitable for handlebars inner diameter 14.5-23 mm), not suitable for any descending handlebars, COICER bicycle mirror is suitable for e-bikes, mountain bikes, road bikes, scooters and so on. ●Convex bicycle mirror: the rear view mirror is designed with convex mirror to expand the field of vision; HD mirror for clearer observation of different road conditions. ●300° adjustable: COICER 300° adjustable bicycle mirror has a larger field of view and can meet your different visual needs. Suggestion: for your driving safety, please set it to your desired position before driving. ●Easy to install: Equipped with the right screws and tools, you can easily install and remove the bicycle mirror. We also provide a detailed installation guide video in the listing to guide you through the installation.