Applicable bicycle models Merida One Sixty 1, One Sixty 400, One Twenty 600, OneForty 6000. Fits handlebars with a diameter of 22–32 mm (please measure your handlebar before ). Mounts on either side using the included nonslip rubber gaskets and screws. Built to withstand daily riding, bumps and vibrations without loosening or breaking, while protecting your handlebars from scratches. materials Constructed with a quality ABS shell, tough aluminum tubing, antislip rubber base and a glass mirror. The ABS shell resists impact and wear, the thickened aluminum tube is durable and deformationresistant, the glass lens provides a broad view, and the antislip base increases friction for secure mounting. Clear and wide field of vision The convex glass lens delivers an HD, wideangle rear view with no blind spots, allowing you to monitor vehicles, cyclists and pedestrians behind you. The glare surface ensures a crisp reflection in various lighting conditions, enhancing safety whether you are commuting, touring or mountain biking. 360° adjustable Features a fully rotatable mirror head and bendable aluminum support rod, allowing adjustment to nearly any angle for the viewing position. Bend or rotate to suit your height, riding posture or terrain, ensuring an rear view without turning your head. Installation and removal take minutes, with no special tools required. Use scenarios Urban commuting: keep a constant eye on traffic behind you; quickly adjust the angle when vehicles approach for safe lane changes. Road cycling or touring: maintain a wide rear view on descents and long straights; mount on either side to optimize your field of view. Mountain biking: stay aware of riders and obstacles approaching from behind on rugged terrain; adjust comfortably as your position changes.