Lightweight and durable: plastic, silicone rubber pads and handles are very durable. Plastic mirror: Mountain bike mirror has a wide field of view, which can be adjusted to any angle of view. Multifunctional: can be rotated and adjusted to any direction to help you observe all directions of your back. The mirror rotation adjusts the mirror position. Adjustable strap: Adjustable rubber strap design, suitable for handlebars with a diameter of 20MM-35MM. Easy to install: no tools required. Just fasten with a rubber strap. Installed in a few minutes. size:Length is 100mm, diameter is 70mm Material:ABS colour:Black Package Contents: 2 * Bike Mirror Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.