Product name:bicycle handlebar plug rearview mirror Product size about : 4.4*4cm/1.73*1.57in Applicable aperture: 21-22mm Product color: As shown in the figure Product material:ABS product features: 1. Enhanced Safety: This outdoor cycling convex mirror provides an essential rearview for road and mountain bikes, offering enhanced safety and awareness of surrounding traffic. 2. High Definition Reflective Surface: The mirror features a high-definition reflective surface, ensuring clear and crisp visibility for the rider, allowing for quick and easy assessment of the rear view. 3. Universal Fit: Designed to fit most road and mountain bikes, this mirror offers a versatile and adaptable solution for cyclists seeking improved visibility during their rides. 4. Easy Installation: The handlebar plug design allows for easy and hassle-free installation, ensuring that the mirror is securely attached and ready for use in no time. 5. Durable Construction: Constructed with high-quality materials, this mirror is built to withstand outdoor conditions and provide long-lasting performance, making it a reliable and practical addition to any cyclist's gear. 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 pc bicycle handlebar plug rearview mirror