UNIVERSAL: Compatible with Most Popular Bicycle mountain road bike, Fit for handlebar with diameter less than 0.87 inch (22mm). Both left and right mirror are same.
SAFETY: Don't have to constantly turn around to look what is behind you.
WIDE VISUAL RANGE: Convex mirror observation better than flat mirror. Discover any potential unsafety factor in time.
FLEXIBLE: Fully adjustable with 360 degree rotation, Easy to install.
100% Risk free purchase: You will be 100% satisfied or we'll give you your money back.