Product Material: ABSSize: 12 * 10 * 5.2cmQuantity: 1 piecePackage content: 1 * bicycle rear view mirror1. Wide field of view 12 * 10 * 5.2 cm.The HD convex mirror has a smooth and glare-free surface and offers you a clearer and wider field of view, which makes driving safer. Note: please remember to peel off the protective film before use.2. Firm and Durable The bicycle rearview mirror is made of durable nylon resin, is shockproof and corrosion-resistant. Very solid construction ensures that this mini rearview mirror lasts for a long time. It won't snap off easily when unexpected bumps occur.3. Full Angle Adjustable With 360 rotatable design, this adjustable safe rearview mirror can be adjusted to any angle. Glass mirrors can be installed on the left or right side so the driver can clearly see the traffic behind them without looking back.4. Application Widely Suitable for hollow handlebars with a (please measure before purchase) that are easy to install and remove. Meanwhile, our bicycle rear view mirror handlebar is suitable for cycling, mountain bikes, racing bikes, etc.5. Besides the mirror, we offer you an additional pack of safe waterproof fluorescent reflective stickers with PET adhesive materials and self-adhesive design, which are very useful for safe driving and eye-catching when driving at night. You can paste it on the back of the rearview mirror or on the bike rack.