??? HD automotive grade convex glass bike mirrors with safe shatterproof film,allowing you to see clearer and sharper images. 360 degree rotatable and 180 degree adjustable . And it can adjust to any viewing angle. The Size of lens is 4.7X2.4Inches, which can see more behind you compared to others to ensure your riding safety. ??? Universal design bicycle rear view mirror fits the flat handlebar. Fits 21~26mm outside diameter MTB and cruiser handlebar. Only applicable for left side. For mountain bike, E-bike and so on. DOESN'T FIT DROP BAR BIKES. ???Made with solid and durable PA6+30%GF material, high impact frame.Solid and Reliable 304 stainless steel screw to install. Aluminum alloy black clamp and adjustable spacer can steady perfectly connection with the handlebar. ??? 4.7X2.4" Wide wing shape glass lens,scratch resistant, lasting definition convex glass mirror with the shatter-proof film.More sturdy and durable nylon with fiber frame and waterproof rubber ring, reliable stainless steel screw. Easy to install with a 4mm hex key(INCLUDED).Flexible and variable installation methods. ???Satisfaction Guaranteed: Both customer satisfaction and product quality are very important to us. So if you encounter any problems, We can provide a full Refund or a Replacement and lifetime warranty!