Handlebar Bike Mirror, HD,Blast-resistant, Car Used Safe Glass Lens Eco-friendly Sturdy High-Impact Nylon Plus Fiber Frame, Aluminum Black ED Black Clamp NEW CLAMP! Fits 21~26mm Outside Diameter MTB and Cruiser Handlebar (***DOESN"T FIT DROP BAR***)) Printed Reflector on the Back, Safe at Night 5mm Allen Key is Required for Assembling, Made in TaiwanProduct Description