Features: Can be used as a bicycle end plug: Effectively prevents dust and water from entering the handlebars during rides Multi-angle free adjustable: The rearview mirror mounts on the handlebar and can be adjusted 360 degrees High-definition convex mirror with wide vision: Uses high-definition acrylic convex mirror for enhanced visibility up to 40 meters to help ensure safe riding Upgraded acrylic convex mirror for clearer vision: Designed with high-definition acrylic material for improved clarity and wider viewing angle Fits handlebars of MTB, road bikes, and foldable bikes with diameter 16-22mm Specifications: Material: Nylon + Acrylic Weight: 50g Size: As shown in picture Note: 1. Please allow 1-2 cm errors due to manual measurement; ensure you are comfortable with this before ordering. 2. Due to differences between monitor displays, the picture may not reflect the actual color of the item. Package includes: 1 x Rearview Mirror