Applicable bicycle models Giant Defy Advanced Pro 1, Defy Advanced Pro 2, Defy Advanced SL Fits handlebars with a diameter of 22–32 mm (please measure the handlebar before ) Built to withstand daily riding, bumps and vibrations without loosening or breaking, while protecting your handlebars from scratches Can be mounted on either side using the included nonslip rubber gaskets and screws materials Constructed from quality ABS, tough aluminium tubing, antislip rubber base and glass mirror ABS shell resists impact and wear Thickened aluminium tube is durable and deformationresistant Glass lens provides a broad view Antislip base increases friction for secure mounting Clear and wide field of vision Convex glass lens provides a definition, wideangle rear view with no blind spots Easily monitor vehicles, cyclists and pedestrians behind you Glare surface ensures a crisp reflection in various light conditions Improves safety for commuting, touring or mountain biking 360° adjustable and easy to install Fully rotatable mirror head and bendable aluminium support rod allow almost any angle Bend or rotate to suit your height, riding posture or terrain for an rear view Quick installation and removal in minutes No special tools required Mounts securely on either side with the included hardware