Product size about : 5*4cm/1.9*1.5in Mirror : 3cm/1.1in Suitable pipe diameter: 16-22mm Product color: As shown in the figure Product material:ABS product features: Widely compatible: Suitable for bicycle handlebar plugs with a width of 16-22mm, suitable for most road and mountain bikes, easy and stable installation. High-quality materials: Made of Sturdy plastic/metal materials, impact-resistant, windproof and wear-resistant, ensuring long-term worry-free use. Convex reflector design: The rearview mirror is a convex reflector, providing a wider viewing angle, enhancing riding safety, and effectively reducing blind spots. Convenient installation: The simple installation structure ensures quick installation and removal, no professional tools are required, plug and play. Safe riding assistance: The clear field of view allows you to easily observe the traffic conditions behind you and enhance your riding confidence, especially suitable for urban commuting and long-distance riding. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 /2pc Bike Mirror