[Upgrade Material]-- This Bicycle Mirror features a high-definition acrylic lens, a durable PC shell, and a PA frame, ensuring it's shockproof and shatterproof for a long lifespan��an essential accessory for cyclists.<br> [HD 360 Adjustable Rotatable Handlebar]-- The unique spherical design of this Bike Handlebar Mirror allows for 360-degree rotation to easily find your preferred viewing angle.<br> [Convex Bike Mirror]-- The high-definition convex design offers a clearer and wider perspective, enhancing safety while cycling.<br> [Universal Design]-- Compatible with most bicycles, including mountain bikes, electric bikes, folding bikes, and scooters, this mirror fits handlebars with an inside diameter of 16 to 22 mm.<br> [Easy to Install]-- To install this Handlebar Rearview Mirror, use a hex key to attach it to the handlebar end, remove the connector, and insert the expansion screw into the handlebar hole.