Solid material and Clear Visions: This bike rear view mirror is made of high quality acrylic convex mirror inlaid in black ABS shell. The mirror arm is made from solid aluminum tubing covered in durable nylon resin. Premium material effectively withstands impact and impact. 360 convex mirror and Adjustable Arm: The high-definition convex mirror is 82mm in diameter to ensure maximum coverage and ensure a clear view. The flexible design with longer arm and 360 degree rotating mirror provides a wide view of the surroundings, eliminating distraction and neck strain. Clamp and Rubber Gaskets: Each bike mirror for handlebar is equipped with 1 round clamp and 2 rubber gaskets. Easy Installation and How to use: Mount the mirrors under the handlebars or grips, tighten the thumbscrew, no other tools needed. Suitable for various bicycles such as mountain bikes (mtb), road bikes, folding bikes, city bikes, e-bikes. Classic black makes your bike pretty cool.