Ultra-Clear View - Our Flexstalk handlebar bike mirror features a large 800R glass mirror lens for a crystal clear and wide view angle. Upgrade your cycling with a quality bar end bike mirror and never get snuck up on again. Fully Adjustable - Infinitely adjustable neck design & 360 degree lens rotation allows you to securely position the rearview bicycle mirror to the optimum view angle. Avoid neck strain and place your bike mirror in the perfect location. Compatibility - Our Flexstalk clamp on bike mirror securely fits any round handlebar up 1" (25.4 mm) diameter. Ideal for mountain bikes, road bikes, cruiser bikes and electric bikes. Quality Construction - Features backside reflector for added safety. Quality molded thermoplastic construction ensures our clamp on bike mirror is not only durable and rust resistant, but also remains secure while cycling for a clear and steady view. Hassle-free Installation - Tool-free assembly. Simply attach the Flexstalk bike mirror to any round handlebar up to 1" (25.4mm) bar, tighten the thumb screw, and adjust the flexible mirror to desired view position.