Features a unique rotating design allowing full 360 degree for optimal rear visibility. Easily adjust the glass angles to matching your riding position. Perfect for mountain biking and road cycling. Equipped with glass surfaces offering clear rearview . This impacts resistant materials outperforms standard glass, providing enhanced for cyclists in busy traffics conditions. Designed for effortless setups, suitable for left handlebars (16mm-21mm diameter). This user friendly systems eliminates complicated installations, suitable for cyclists look for bike glass upgrades. Combines housing with aluminum alloy bracket. Withstands various weather conditions, making it ideal for rainy rides and ensuring long terms for almost weather cycling. Package includes: 1Pc Left Bike Glass