Mirror support tube, plastic with aluminum, 7 inch (18cm) length, can bend freely for what you want Our mirror is 360° adjustable and rotatable so it can be adjusted to any angle according to your needs, its rotatable convex mirror provides a clear view of the road conditions behind you. Without any tools, it can be easily installed on your bike by double screws. Equipped with 2 non-slip rubber gaskets for increased friction, which can hold lens on the mirror mount to keep it in place and can be attached to any adjusted handlebar firmly and easily. The convex mirror glass is curved outwards and widens your field of vision. Flexible acrylic mirror provides maximum clear view of your cycling safety, safer surface not like glass easy to break, reduce the risk of getting hurt This bike mirror is suitable for handlebar diameter 22mm-38mm, is ideal for road bike, mountain bike, bmx, motorcycle, e-bike, electric scooter and any other conventional bike. What's included:</ p> 1 Pcs Bike Mirrors Specifications: Material: Acrylic, Plastic, Aluminum Size: Length of the mirror support tube: 7 inches (18 cm) Mirror diameter: 9cm Color: black